Milliken Medical Adult Envelope Arm Sling, Fits Either Arm, LightweightLightweight cotton/poly fabric makes this sling comfortable, durable and easy to wear. Strap adjusts easily to ensure a proper fit. Fits either arm. Machine washable. Adult or youth size.Lightweight, durable and easy to wear.Strap adjusts easily to ensure a proper fit.Fits either arm.Machine washable.