Designed to protect the Small Stacy Westfall Activity Ball from everyday wear and tear, this cover is constructed from a durable polyester material that 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. Purple cover color corresponds to the purple color of the small-sized ball.Note: This product may require up to 2 additional days for order processing prior to shipping