Material : This knee brace is made of NON-SLIP Elastic cotton , Latex, and Bamboo yarn, providing added comfort and copper fit compression This multipurpose copper fit knee sleeve offers compression and warmth to reduce pain and swelling, aiding in knee pain,and ligament issues, sprains, strains, injury recovery, and promoting muscle recovery in sports like climbing, running and hiking. Bamboo yarn is a breathable, moisture-absorbing material that effectively absorbs sweat, reduces odor, and keeps knees warm for extreme sports in cold climates.