From team sports to trail running, these Skins Compression Series-3 Unisex arm sleeves are engineered to support you. They maximize your performance from pre- to post-workout by accelerating circulation and reducing muscle oscillation. Moisture wicking and 50+ UPF fabric. Size by measuring arm circumference around the thickest point (see size guide photo). This item is a new with tags sales rep sample. Retail range is $49.99. Stock photos show arm sleeve in black with no stars and calf sleeves with stars.