Chill-Its 6695 Sun Protection Arm Sleeves, Polyester/Spandex, X-Large/2X-Large, Blue UPF 50+ protection from harmful UV rays. Will absorb sweat and wick moisture away to create a cooling effect. Anti-odor treatment for long-lasting freshness. Soft, stretchable and seam-free performance knit fabric. Includes two sleeves that fit on both left and right arms. Machine washable.