From the Chuckit! Range. Tennis ball medium 2 pack. Safer than a regular tennis ball, featuring a natural rubber shell covered with non-abrasive felt, Chuckit! Tennis balls are gentler on your dog’s mouth, protecting their teeth & gums. Increased visibility, pets & pet parents can easily spot the bright blue & orange tennis balls during outdoor play. Made from natural high-bounce rubber that encourages dogs to leap & jump. Floats in water, ideal water toys. Soft yet durable, covered in soft felt, comfortable to carry yet durable for extended use. 2 balls total. Small size: 6.5cm