Features & Specifications Fully bonded self-inflating mattress 100mm thick at full inflation Fast self-inflation valves for convenient set up whilst allowing control of air intake for preference of firmness Highly durable construction whilst providing ultimate comfort Curved corner design for versatile fit in various swags and tents Water resistant top shell to ensure easy cleaning and reduces foam moisture draw 4 valves on ATM 900, 6 valves on ATM 1100, 6 valves on ATM 1400 Top: Hardwearing 75D polyester with PVC coating Bottom: Waterproof 300D oxford with PVC coating Side: Robust 0.45mm PVC 3D edge for greater strength and durability Inner: Open cell high density 23kg/m3 foam provides ultra-comfort for those requiring added comfort, support and warmth 600D oxford poly carry bag with reinforced webbing handles for easy transport and storage Repair kit included