These awesome caps are made by Antigua, an American sportswear and apparel brand founded in Phoenix, Arizona in 1976. The Chillin' Cap does feature the same "Desert Cool" heat releasing technology as our standard running caps and are also very lightweight and breathable. These caps can easily be used for your next run. They feature a more structured peak than the running caps so you'll fit in perfectly either on the trails or at the pub. One Size Fits All with an adjustable velcro strap at the rear. Stay Cool.