Middle School Sports Recommendation Federation Product Made with Asahi Kasei Fibers High-Grade Processed Fabric Excellent Stretch Highly Absorbent of Water and Sweat Surface: 100% Polyester Lining: 50% Cotton, 50% Polyester Long-term storage item, still in its original packaging. If you would like me to take it out of the bag to check the elasticity of the rubber, please leave a comment. It will generally be shipped in the bag. Some items have been taken out of the bag for photography. I received this as a gift, but I won't be using it, so I'm putting it up for sale. Please understand that this is a sale of unwanted items.