This Full Cheeks Adventure Exercise Ball is designed with two durable and secure lock-tight lids for convenient access to your pet. Our 13-inch Adventure Exercise Ball makes it simple to keep your furry little one active and entertained. We believe caring for your furry little one should be as easy as loving them, and now it can be. Our products are specially made for them, and are designed to be simple for you. All they need to do is what they do best: give lots of love.