SENSITIVE SUN PROTECTION Our Arm Sleeves are ideal when wearing a short sleeve t-shirt or short sleeve polo to protect your arms and hands from harmful UV rays. Made from cotton and polyamide lycra, the fabric is super soft on your skin while helping you regulate your body temperature, keeping you cool and protected in the heat. With thumbholes: There is an opening on the side of the sleeve for the thumb. This style enables you to put your thumb through the sleeve and protect the back of your hand and palm, whilst covering the full length of your arm from the bicep area down to your knuckles. It can also be worn comfortably without making use of the thumbhole feature. BENEFITS Accredited with a UPF 50+ rating, it blocks more than 98% of UVA and UVB rays and is equivalent to wearing SPF 50+ sunscreen all day long Cooling effect on the skin Suitable for all skin types CARE INSTRUCTIONS Machine wash. Do not tumble dry. Warm iron. Do not iron logos.