The Arctic Fleece Bodysuit, though lightweight, is very durable. However, it is not indestructible. We do guarantee that the seams will not come unstitched. In fact there is a full exchange warranty against manufacturing defects. The 4 ways stretch material is of high quality and has such a large amount of stretch it will move with your dog. If the material becomes punctured, it will not run–the hole may slightly increase if not mended.