Each Sea Creature toy is made with 4 layers. 2 layers are made of industrial grade luggage material 1 layer of plastic coating and the other layer is made of soft fleece on the outside. All 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 four rows of stitching. This extra piece of black trim is sewn with 3 linear stitches to give the product a total of 7 seams. Features . Vet recommended and approved. World s Tuff est soft toy . For all sizes of dogs. Machine washable air dry and they float. Design - King Crab