Cobalt Calm Plush Mattress

Featuring 3 zones for lower back support, breathable fabrics, and responsive coils for classic comfort—plus upgrades available for cooling pressure relief. Feel Plush Support Featuring 3 zones for lower back support plus an 800-density individually-wrapped coil system for classic comfort Pressure Relief Enhanced with Gel Memory Foam for contouring relief Cooling Topped with a breathable fabric so you sleep and wake refreshed Motion Control Designed to minimize the impact of your partner's movement Experience the trusted comfort of Serta with Serta® Classic® Featuring a soft, breathable cover, PillowSoft® Aire foam, and an 800-density coil support system, this mattress helps you sleep comfortably and wake ready to ease into your day. With 3 zones for lower back support, plus a Gel Memory Foam upgrade for even more pressure relief, this mattress balances cool breathability with responsive support and pressure relief for a classically comfortable rest. Breathable cover helps you sleep an