Sierra Sleep by Ashley
Shop the Sierra Sleep collection at Managhan's Furniture in Libby, MT. Sierra Sleep mattresses are designed to deliver quality comfort and reliable support at price points that work for every budget. The collection includes memory foam, innerspring, and hybrid mattress options in a range of firmness levels and standard sizes. Whether you're furnishing a guest room, setting up a child's bedroom, or upgrading your own mattress, Sierra Sleep offers solid construction and comfort-focused design without the premium pricing. Each mattress is built with durable materials and thoughtful engineering to support healthy sleep habits night after night. Pair a Sierra Sleep mattress with one of our bed frames, foundations, or adjustable bases for a complete sleep setup. Visit our mattress showroom in Libby to try Sierra Sleep mattresses in person and compare comfort levels side by side. Shop in store or online with delivery and financing available. Financing options available.
Original price
$489.00
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Original price
$969.00
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$489.00
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$969.00
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$489.00
$439.00
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$869.00
$439.00
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$869.00
Current price
$439.00
Limited Edition Firm Mattress
Luxury comfort leads to luxury rest. Wake up refreshed and ready to take on the day with this firm twin XL mattress. Packed inside are layers of su...
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Original price
$489.00
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Original price
$969.00
Original price
$489.00
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Original price
$969.00
Original price
$489.00
$439.00
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$869.00
$439.00
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$869.00
Current price
$439.00
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$649.00
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$1,109.00
Original price
$649.00
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$1,109.00
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$649.00
$579.00
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$999.00
$579.00
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$999.00
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$579.00
Limited Edition PT Mattress
Luxury comfort leads to luxury rest. Wake up refreshed and ready to take on the day with this pillow top California king mattress. Packed inside ar...
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Original price
$649.00
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Original price
$1,109.00
Original price
$649.00
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Original price
$1,109.00
Original price
$649.00
$579.00
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$999.00
$579.00
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$999.00
Current price
$579.00
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$1,309.00
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Original price
$1,989.00
Original price
$1,309.00
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$1,989.00
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$1,309.00
$1,179.00
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$1,789.00
$1,179.00
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$1,789.00
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$1,179.00
Millennium Cushion Firm Gel Memory Foam Hybrid Mattress
Discover the luxury of this twin XL hybrid mattress. Two layers of temperature-regulating material keep you at a comfortable temperature all night ...
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$1,309.00
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Original price
$1,989.00
Original price
$1,309.00
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Original price
$1,989.00
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$1,309.00
$1,179.00
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$1,789.00
$1,179.00
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$1,789.00
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$1,179.00
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$1,239.00
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$1,959.00
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$1,239.00
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$1,959.00
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$1,239.00
$1,109.00
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$1,759.00
$1,109.00
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$1,759.00
Current price
$1,109.00
Millennium Luxury Gel Memory Foam Mattress
When it comes to your comfort, discover the luxury of this queen gel memory foam mattress. Cooling gel copper-infused memory foam and two layers of...
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$1,239.00
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$1,959.00
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$1,239.00
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$1,959.00
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$1,239.00
$1,109.00
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$1,759.00
$1,109.00
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$1,759.00
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$1,109.00
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$1,729.00
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$2,369.00
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$1,729.00
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$2,369.00
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$1,729.00
$1,549.00
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$2,129.00
$1,549.00
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$2,129.00
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$1,549.00
Millennium Luxury Plush Gel Latex Hybrid Mattress
Discover the luxury of this hybrid plush mattress. A layer of cooling gel latex and two layers of temperature-regulating material keep you at a com...
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$1,729.00
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$2,369.00
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$1,729.00
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$2,369.00
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$1,729.00
$1,549.00
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$2,129.00
$1,549.00
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$2,129.00
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$1,549.00
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$359.00
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$669.00
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$359.00
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$669.00
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$359.00
$319.00
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$599.00
$319.00
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$599.00
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$319.00
Peak 2.0 10 Hybrid Mattress
Pure sleep perfection. With this hybrid twin mattress, restorative rest is easier than ever. You can snooze soundly on its layers of comforting qui...
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$359.00
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$669.00
Original price
$359.00
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$669.00
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$359.00
$319.00
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$599.00
$319.00
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$599.00
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$319.00
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$439.00
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$779.00
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$439.00
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$779.00
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$439.00
$389.00
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$699.00
$389.00
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$699.00
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$389.00
Peak 2.0 10 Memory Foam Mattress
Pure sleep perfection. With this California king mattress, restorative rest is easier than ever. Its high-density memory foam conforms to your body...
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$439.00
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$779.00
Original price
$439.00
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$779.00
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$439.00
$389.00
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$699.00
$389.00
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$699.00
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$389.00
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$399.00
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$729.00
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$399.00
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$729.00
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$399.00
$359.00
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$649.00
$359.00
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$649.00
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$359.00
Peak 2.0 12 Hybrid Mattress
Pure sleep perfection. With this hybrid California king mattress, restorative rest is easier than ever. You can snooze soundly on its layers of com...
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$399.00
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Original price
$729.00
Original price
$399.00
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$729.00
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$399.00
$359.00
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$649.00
$359.00
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$649.00
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$359.00
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$579.00
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$859.00
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$579.00
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$859.00
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$579.00
$519.00
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$769.00
$519.00
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$769.00
Current price
$519.00
Peak 2.0 12 Memory Foam Mattress
Pure sleep perfection. With this twin mattress, restorative rest is easier than ever. Its high-density memory foam conforms to your body, deliverin...
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$579.00
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$859.00
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$579.00
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$859.00
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$579.00
$519.00
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$769.00
$519.00
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$769.00
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$519.00
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$379.00
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$719.00
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$379.00
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$719.00
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$379.00
$339.00
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$639.00
$339.00
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$639.00
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$339.00
Peak 2.0 8 Memory Foam Mattress
Pure sleep perfection. With this twin mattress, restorative rest is easier than ever. Its high-density memory foam conforms to your body, deliverin...
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$379.00
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$719.00
Original price
$379.00
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$719.00
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$379.00
$339.00
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$639.00
$339.00
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$639.00
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$339.00
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$269.00
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$589.00
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$269.00
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$589.00
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$269.00
$239.00
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$529.00
$239.00
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$529.00
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$239.00
Peak 2.0 Bonnell Mattress
Pure sleep perfection. With this full mattress, restorative rest is easier than ever. You can snooze soundly on its layers of comforting quilt foam...
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Original price
$269.00
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Original price
$589.00
Original price
$269.00
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$589.00
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$269.00
$239.00
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$529.00
$239.00
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$529.00
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$239.00
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$1,349.00
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$1,729.00
Original price
$1,349.00
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$1,729.00
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$1,349.00
$1,209.00
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$1,549.00
$1,209.00
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$1,549.00
Current price
$1,209.00
Plush Luxe 2.0 Mattress
Reap the benefits of restorative sleep with the plush feel of this Euro top king mattress. Layers of cushioned comfort, including memory foam, quil...
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Original price
$1,349.00
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Original price
$1,729.00
Original price
$1,349.00
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Original price
$1,729.00
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$1,349.00
$1,209.00
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$1,549.00
$1,209.00
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$1,549.00
Current price
$1,209.00
Original price
$2,029.00
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Original price
$2,699.00
Original price
$2,029.00
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Original price
$2,699.00
Original price
$2,029.00
$1,819.00
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$2,429.00
$1,819.00
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$2,429.00
Current price
$1,819.00
Terra Sleep Firm Mattress
Peaceful zzz’s, positive impact. This mattress prioritizes conscious craftsmanship without sacrificing the luxurious sleep you love. Pressure-relie...
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Original price
$2,029.00
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Original price
$2,699.00
Original price
$2,029.00
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Original price
$2,699.00
Original price
$2,029.00
$1,819.00
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$2,429.00
$1,819.00
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$2,429.00
Current price
$1,819.00
Original price
$2,029.00
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Original price
$2,699.00
Original price
$2,029.00
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Original price
$2,699.00
Original price
$2,029.00
$1,819.00
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$2,429.00
$1,819.00
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$2,429.00
Current price
$1,819.00
Terra Sleep Medium Mattress
Peaceful zzz’s, positive impact. This mattress prioritizes conscious craftsmanship without sacrificing the luxurious sleep you love. Pressure-relie...
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Original price
$2,029.00
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Original price
$2,699.00
Original price
$2,029.00
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Original price
$2,699.00
Original price
$2,029.00
$1,819.00
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$2,429.00
$1,819.00
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$2,429.00
Current price
$1,819.00
Original price
$2,559.00
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Original price
$3,229.00
Original price
$2,559.00
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Original price
$3,229.00
Original price
$2,559.00
$2,299.00
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$2,909.00
$2,299.00
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$2,909.00
Current price
$2,299.00
Terra Sleep Soft Mattress
Peaceful zzz’s, positive impact. This mattress prioritizes conscious craftsmanship without sacrificing the luxurious sleep you love. Pressure-relie...
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Original price
$2,559.00
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Original price
$3,229.00
Original price
$2,559.00
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Original price
$3,229.00
Original price
$2,559.00
$2,299.00
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$2,909.00
$2,299.00
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$2,909.00
Current price
$2,299.00
Sierra Sleep by Ashley — Frequently Asked Questions
Does Managhan's Furniture (Libby, MT) carry Sierra Sleep by Ashley?
Yes. We're proud to carry Sierra Sleep by Ashley — mattresses and sleep essentials — and you'll find its current lineup right here in this collection.
What is Sierra Sleep by Ashley known for?
Sierra Sleep by Ashley is recognized for mattresses and sleep essentials, with a focus on balancing style, everyday comfort, and long-term durability so the pieces hold up to real life.
Is Sierra Sleep by Ashley a good brand?
Sierra Sleep by Ashley is a well-established, widely trusted name — one reason we stock it. The best way to judge fit is to browse this collection and compare the pieces against what you're looking for; contact us if you'd like our take.
Does Sierra Sleep by Ashley come with a warranty?
Yes — Sierra Sleep by Ashley products are backed by the manufacturer's warranty, which covers defects for a period that varies by item. Keep your receipt as proof of purchase and contact us if you ever need to start a claim.
Do you deliver and finance Sierra Sleep by Ashley products?
Yes on both. We offer financing options on qualifying purchases, and we deliver throughout our service area — see our shipping & delivery policy or contact us for a quote.
What if my Sierra Sleep by Ashley item arrives damaged?
Note it on the delivery paperwork, take a few photos, and contact us right away. We'll work with you and Sierra Sleep by Ashley to arrange a repair, replacement, or return under our return policy.