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:
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✅ 2-Sided Ultra-Firm Design (Firm + Firmer sides)
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✅ Hybrid: Dense foam + individually wrapped coils
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✅ Reinforced edge support for full-surface comfort
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✅ GlacioTex™ Cooling Cover (except Twin)
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✅ 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
