12 memory foam mattresses

Most 12-inch memory foam mattresses are offered in standard U.S. sizes: Twin, Twin XL, Full, Queen, King, and California King.

Many 12‑inch memory foam mattresses include cooling features such as gel‑infused memory foam or dedicated cooling gel layers, cold‑touch or breathable fabric covers, and proprietary cooling technologies designed to help regulate temperature.

Support ranges from all‑foam constructions (no coils) to hybrid designs that pair memory foam with pocketed or encapsulated coils. Some hybrids add a foam‑encased coil perimeter to improve edge support.

Many 12‑inch memory foam mattresses are sold as mattress‑in‑a‑box: they’re compressed, rolled, and shipped in a box. Most expand within 24–72 hours, though some descriptions recommend allowing up to 72 hours for full expansion.

Coverage varies by brand and model. Listings range from short limited warranties (e.g., 30 days) to more common 10‑year limited warranties, and some models offer trial periods such as a 180‑night sleep trial. Review the specific mattress listing for exact warranty and trial terms.

Follow the manufacturer’s instructions, but common care steps include spot‑cleaning or wiping spills, vacuuming the surface, and removing and washing a removable cover with water and mild detergent when allowed.

Weights depend on size and construction; across typical listings, 12‑inch memory foam mattresses can range roughly from the low 30s of pounds up to about 100 pounds.