Make Your Sweet Puppy Look Like The Dangerous Creature Hethinks He Is With This Shark Costume. This Adorable Dogcostume Features A Polyester Shark Dorsal Fin Attached To Anelastic Band With Velcro Clasps That Fits Around Your Dog'Stummy. A Smaller Band Connects To The Dog'S Collar To Holdthe Fin In Place. For Dogs Weighing 8-13 Lbs.Pet Small Fits Neck Sizes 8-12 In, Chest 13-16 In, Backlength 11-13 In.