AKSPORT Air Mat track Set 5pcs Tumbling Mat, Yoga CushionsAKSPORT Air Tumbling Track Mat is Made of Double Wall Material (also know as drop stitch material) and 0. 9mm high quality PVC tarpaulin, Better Air tightness and Durability Since Reinforcement are Made for All Seams. It's Extremely Safe When You Using It Because This Mat is Leak Free and It is No Smell Because Premium Material. Dimensions: Item Length Width Thickness Air Mat 10'(3m) 3. 3'(1m) 4inch(10cm) Air Board 3. 3'(1m) 1. 96'(60cm) 8inch(20cm)