.axd{cursor:pointer;display:flex;align-items:center;justify-content:space-between;}.axd .axa{display:inline-block;transition:transform .2s ease;margin-left:10px;font-size:11px;color:#2563eb;}details[open]>summary.axd .axa{transform:rotate(90deg);}.axd:hover{background-color:#f8fafc;}.axk{border:1px solid #e5e7eb;border-radius:10px;margin:0 0 10px;overflow:hidden;background:#fff;}.axks{padding:10px 12px;font-size:13px;color:#111827;background:#f9fafb;list-style:none;}.axki{padding:10px 12px 12px;background:#fff;}.axkl{padding:0 0 4px;font-size:11px;font-weight:700;color:#6b7280;text-transform:uppercase;letter-spacing:0.4px;}.axkul{font-size:13px;line-height:1.5;color:#374151;list-style:none;margin:0 0 4px;padding:0;}.axkul li{padding:4px 0;border-bottom:1px solid #f3f4f6;}.axvb{font-size:13px;line-height:1.5;color:#374151;margin:0 0 8px;}.axrf{border:1px solid #e5e7eb;border-radius:8px;padding:12px 14px;margin:8px 0 0;background:#fff;}.axrfl{font-size:10.5px;font-weight:700;color:#6b7280;text-transform:uppercase;letter-spacing:0.4px;margin-bottom:8px;}.axrfrow{display:flex;gap:20px;flex-wrap:wrap;}.axrfrow>div+div{border-left:1px solid #e5e7eb;padding-left:20px;}.axrfb{font-size:16px;font-weight:700;color:#111827;margin-bottom:1px;}.axrfs{font-size:11.5px;color:#6b7280;line-height:1.4;}.axrfn{font-size:11.5px;color:#6b7280;line-height:1.4;margin-top:8px;}.axrm{display:inline-block;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:0.4px;padding:5px 12px;border-radius:999px;background-color:#eef2ff;color:#4338ca;margin:0 0 10px;} Experience more restful sleep with this innerspring mattress. Feel the support of its high-density quilt foam and pad as this truly traditional coil mattress conforms to your body. The material is ideal for allergy sufferers, offering peace of mind and undisturbed sleep. For convenience, this mattress arrives in a box and is easy to set up. Just remove the plastic wrap and unroll it. Foundation/box spring available, sold separately. Specifications▶ Specifications Details Brand Name Sierra Sleep® by Ashley Material Fabric Lifestyle Traditional Bed Size Twin Pattern Textured Mattress Feature Hybrid Assembly Assembly Not Required Product Details▶ Comfort level: firm 2" high-density quilt foam; high-density pad 13-gauge Bonnell coil unit 5-year non-prorated warranty Note: Purchasing mattress and foundation from two different brands may void warranty; check warranty for details Foundation/box spring available, sold separately State recycling fee may apply Mattress ships in a box; please allow 48 hours for your mattress to fully expand after opening Availability▶ Available Configurations SKU M58711 — TwinDimensions: 74.5''W x 38''D x 8''H | Weight: 33.0 lbs▶This option is a Twin Mattress.SKU M58721 — FullDimensions: 74.5''W x 53''D x 8''H | Weight: 45.0 lbs▶This option is a Full Mattress.SKU M58751 — California KingDimensions: 83.5''W x 72''D x 8''H | Weight: 67.0 lbs▶This option is a California King Mattress.