ULTIMATE CONSTRUCTION: Each toy is made with 2 layers of industrial grade luggage material, 1 layer of plastic coating, and 1 layer of soft fleece on the outside. All 4 of these layers are sewn together to make one super strong layer of material. Each toy is sewn together with 2 layers of cross stitching and then 2 layers of linear stitching. After the toy is sewn together an additional piece of black trim is added to cover the 4 rows of stitching. This extra piece of nylon is sewn with 3 linear stitches to give the product a total of 7 seams!