Hard-rubber Kong Goodie Bones create a winning combination of food and play that will keep dogs busy for hours. Special patented "goodie grippers" hold treats Dogs won’t rest until they’ve gotten every morsel! Red is perfect for average chewers Super strong Xtreme Black formula is ideal for aggressive chewers Goodie Bones have classic bone shape with two goodie ports. Dog bones measure 8 1/2"L x 2 3/4"W and is 1 1/4" in the middle. Kong Goodie Bones are retail ready. Sizes may be combined for quantity discounts. Material: Durable hard rubber Size: Large Goodie Bone measures 8 1/2"; Medium measures 7"