Ezyoutdoor 5 pair Cooling Arm Sleeves Cover UV Sun Block Protection for Camping Bivouac Hiking Exercise Sports Golf Riding Bike Outdoor Sports UV protection, High elasticity fabric. No pressure or discomfort in any activity comfortable;Cooler than bare skin, perfect for all outdoor & indoor activities Using environmental lycra, safe and soft for you or your kids skin, no fade after washes. (Machine washable and dry-able, hand wash and air-dry is highly recommend) High performance polyester and spandex: fast sweat kick-away & fast dry;UV Protection for various outdoor activities such as golf, tennis, fishing, baseball, climbing. One size fit most:About 37 cm/14.5 inch long, 22 cm/8.6 inch diameter for upper arm, 16 cm/6.2 inch diameter for down arm Package included : 5 Pairs x Arm Sleeve(color choice randomly picked);Lifetime Warranty7-15 days delivery date with tracking number by USPS