Knox - Firm | Perfect Sleeper X iComfort Smart fit: zero-clearance design works

Smart fit: zero-clearance design works with most platform and storage beds

Retail-ready packaging for efficient stocking and sales process

Meet the Bronze Adjustable Base—a simple upgrade that makes your bed more comfortable

825 Edition Custom Support System

Base Layer: 1” Support Foam

Knox - Firm | Perfect Sleeper X iComfort Smart fit: zero-clearance design worksDescription The Knox Firm is a 13. 5" mattress designed for full body spinal alignment and firm support. Featuring 5 ZoneActive Design, it combines supportive coils and memory foam for optimal comfort. Layers: Quilt layer with CoolFeel fabric for cooling comfort 1" Perfect Conform graphite infused memory foam 5 ZoneActive Support with zoned coils for full body alignment Adjustable base compatible Highlights: Firm support with 5 zoned response Pressure