Shirts are made with vaporlite technology which is Ultralite, Ultracool and Ultracomfortable. Vaporlite's unique TOFU fabric has a distinctive soft feel against your skin making it extremely comfortable, super light and the active moisture wicking attributes keeps you naturally cooled by increasing sweat evaporation. Your t-shirt will have you looking good and feeling great in a shirt that offers comfort and style and is perfect for an 11km fun run & walk.