RPY Pet Dog Toy Durable Clean Teeth Biting Cotton Rope Knots Ball &iexcl;&shy; Perfect to clean, strengthen and massage dogs' teeth and prevent slippers or cloth from biting Made of high quality cotton, edible and good for dogs' health Knots tied by machine, durable and not easy to be damaged Spheroidal design easily attack dogs' attention, good for the interaction between you and pets 3 Sizes(Diameter): Small-2.56 inch; Medium-3.15 inch; Large-3.74 inch