Legendog Dog Birthday Party Supplies Cat Birthday Hat Happy Birthday Balloons Banner Foil Balloons WOOF Letters Balloons for Dog Cat Birthday Decorations (2#) MATERIAL: good quality solid rubber can last for long time use, it is also virtually indestructible. TENNIS BALL SIZE with a rope, the rope may be not durable as you think, it is removable and replaceable, just design for you to train and play with your dog. BE SAFE :This dog ball with rope is safe, non-toxic, durable to be chewed, elastic, soft and can float in water. THE CONNECTION:This dog toy can promote the connection between your beloved dogs and you and cheer up playing atmosphere FOR TREAINING:A great dog ball thrower for dog's training, chewing, playing and much more.