Unique compression bow sleeve that keeps your sleeve tight to your arm to prevent string slap. Features a cell phone holder for easy access without making tons of noise grabbing it out of your pocket. Mesh screen allows for full touch screen operation. Features a mesh pocket for grunt call or flashlight. Comfortable 4 stretch spandex fits snug against clothing. Anti-slip rubber gripping elastic so it doesn't slide off. 90% polyester, 10% spandex material that is moisture wicking. One size fits most.