Upper made of 100% natural Talalay Latex (hard). The 100% natural Talalay Latex adapts perfectly to the contours of the body, immediately offering proper support and relief from any pressure, it "breathes" and together with its anti-allergic and antimicrobial behavior creates the ideal micro-climate for continuous, undisturbed sleep. The upper is surrounded by eco-friendly bamboo fabric with antibacterial certification. • 7cm +/- 1cm• Hard• Natural Talalay Latex