Sleep firm. Flip often. The Plank Firm Luxe Hybrid Mattress by 3Z is a bold take on ultra-firm comfort, and it’s flippable for two levels of firm feel. Designed for back sleepers, stomach sleepers, and firm mattress lovers, this bed features a hybrid construction of high-density foam and individually encased coils for maximum stability and minimal motion transfer.

Each mattress comes equipped with the GlacioTex™ cooling cover for advanced temperature regulation, offering a cool, breathable sleep surface that supports firm comfort.

PLEASE NOTE: TWIN SIZE DOES NOT INCLUDE THE GLACIOTEX™ COOLING COVER. ALL OTHER SIZES COME WITH GLACIOTEX™ BUILT IN.

Why You'll Love It:

• ✅ 2-Sided Ultra-Firm Design (Firm + Firmer sides)

• ✅ Hybrid: Dense foam + individually wrapped coils

• ✅ Reinforced edge support for full-surface comfort

• ✅ GlacioTex™ Cooling Cover (except Twin)

• ✅ Ideal for sleepers with back pain or needing orthopedic-style firmness

Available Sizes: Twin, Twin XL, Full, Queen, Olympic Queen, King, California King

Made by 3Z Brands | Shop Exclusively at SleepCity