Designed to protect the Stacy Westfall Activity Ball from everyday wear and tear, this Weaver Equine Stacy Westfall Activity Ball Cover is constructed from a durable polyester material with PVC backing that is easy to clean. It is perfectly-sized to serve as a guide for proper inflation, taking the guesswork out of how much to inflate the ball. The blue cover color corresponds to the blue color horse activity ball.Note: This product may require up to 2 additional days for order processing prior to shipping