Sea Creature Construction: Each toy is made with two layers of industrial grade luggage material, and one layer of soft fleece on the outside. All of the layers are sewn together to make one super strong layer of material. Each toy is sewn together with 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! Now that’s one tough toy! The Sea Creatures are designed to be play toys and not chew toys.. Each toy is washable (air dry) and they float!