Sporting Good Category : Exercise Type : Knee Sleeves Brand : Other Quantity: Single Pack for Every Order REINFORCED STABILIZER RING ensures the knee cap remains in its proper position, and distributes stress across the ACL, PCL, LCL, and MCL ligaments, lowering the risk of re-injury by guiding the knee cap into proper motion FULL-CUSTOMIZABLE Velco straps can be attached to almost any exterior point, preventing slippage, and accommodating a broad range of users with different needs EXTRA-THICK NEOPRENE sleeve offers additional protection and improved blood circulation to the muscles and tendons even as internal perforations draw away excess perspiration from the skin for a more comfortable experience COMFORTABLE to wear discretely beneath clothing on either leg; one size fits knees 12.5"-18" in circumference