NERF Dog Red and Blue Crinkle Balls: The new NERF™ DOG Rubber Crinkle Ball is perfect for active dogs and owners who look for “over-the-top active play." The NERF Rubber Crinkle Ball is constructed from tough natural rubber that’s single molded, no cutting or gluing making for more durable toy. For add texture and sound found, is a crinkle plush interior. Designed for moderate chewers, when it comes to your dog’s playtime, it’s NERF or NOTHIN’! UPC: 846998070089