Product details of Adjustable Knee Support Patella, Free Size Quality fabric (breathable, soft, durable): Externally, uses unique perforated, super breathable, internally, uses ultra-soft and lightweight Foam pad can take the pain out of weed pulling, flower planting, and other tasks that require you to be close to the ground Non-slip surface grip to prevent injuries, alleviate pain and stress on knees, elbows, wrists, forearm, and more, can be added to any exercise routine Works great with your yoga mat, easy to clean and lightweight, rolled in or around your mat for easy transport It is made for the perfect balance of support and comfort.