Spandex High Quality Elastin Fabric The arm compression can remain in place, and provide optimal compression to help ensure blood flow and proper circulation during exercise. The breathable elastic is going to keep you cool, will fit tightly, and help to wick away sweat during strenuous exercise. Protection Upgrade 10mm thickened EVA pads, One Sleeve included elbow padded and forearm padded, The same cost, more protection. Protect the elbow and forearm area when you sport impact damage or joint damage recovery. Safe and soft for you or your kids skin. Anti-slip Strip Silicone strip, Prevents slipping down, Environmentally material prevent allergies. Support for activities requiring strenuous arm movement, For example, Football, Handball, Soccer, Tennis, Baseball, Crossfit, Basketball, Weightlifting, Powerlifting or Volleyball, etc. More confidently enjoy these activities and keeping your peak performance anytime. Available in Five Sizes Most elbow pads are the wrong size making them bulky uncomfortable and constantly slipping. This is due in large part to most brands using only 1 size pad for all adult and child sleeves. GUOZI has designed different sized pads so that regardless of the size your padded elbow sleeves will be a perfect fit. Available in sizes for youth boys and girls, and adult men and women. Washing Instructions Due to material problems, the arm sleeve is not machine washable that will damage the foam pad inside. It is recommended to wash by hand and dry naturally. If you have any questions, please contact us