Shokz Bone Conduction Open Ear Endurance Headphones, Black Color:Black 95% Long staple cotton Style Number:K01038 95% Long staple cotton 5% Spandex jersey 850D x 900D polyester twill heather 500D x 500D polyester 500D x 500D polyester plain weave sublimated print (Mythic Camo) Large main compartment with U shaped closure and two way zipper Single end pocket for quick access to valuables and accessories Pull handle on end for easy grab and go Back interior zippered pocket for small valuables Padded bottom Double carry handles with padded handle wrap for comfort Detachable OpenRun features the signature Shokz open ear design to keep you tuned in to your music and your moments OpenRun are both lightweight and durable for comfortable all day use that can also withstand the elements