King Crab This soft-shell crab has what it takes to keep your dog coming back for more. Fun to fetch, tug and whip around at your dog's leisure. 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. These toys are machine washable (air dry) and float.