Highly resilient polyurethane foam Bultex (38 kg / m3 - 3.2 kPa). Exclusive ticking (100% cotton) stitched removable and dry cleanable. This tick is treated "HealthGuard" (Anti-bacterial, Anti-microbial, Anti-fungal). The mattresses in 2 parts are connected by a zipper. The ticking is padded with polyester batting (200 g / m2) on one side