The ProFlex 651 Elbow Compression Sleeve provides breathable comfort and support to relieve elbow pain on and off the worksite. The elbow sleeve compresses the joint to improve blood flow and reduce swelling. It also lends support for an improved sense of joint stability. Increase productivity by reducing pain and accelerating injury recovery with this elbow compression sleeve. Both breathable and supportive, the durable knit compression material also enables full range of motion for all-day comfort. The compression arm sleeve easily slides on over the elbow and the knit pattern provides a snug, anti-slip fit while in use. It is gray with black accents for a low-profile wear. To determine ideal size, measure the circumference four inches above your elbow joint. If you are between sizes, go down for increased compression and up for reduced compression.