PRODUCT MATERIAL:Virtually indestructible foam material and Strong nylon rope,Soft and safe for dogs of all ages. TWO SIZE BALL OPTIONSLarge Ball--- The diameter is 3.54 inch/9 cm, Rope length 19.7inch/50cm,Weight: 0.26 lb Suitable for medium and large dogsTrumpet Ball--- The diameter is 2.75inch/7 cm,Rope length 19.7inch/50cm,Weight: 0.16 lb Suitable for medium and small dogs Puppy cat. INTERACTIVE AND FUN:This dog ball with rope is safe, non-toxic, durable to be chewed, elastic, soft ,you can throw the balls away and command your dogs to get them back,strengthening the relationship between you and your beloved dog,Knotted ropes are also great for games of tug of war and fetch. WATER TOY: This fitness ring toys is water floating, it is not only great on the land, but also can be played in the swimming pool, river or lake.