This chalk bag is made of nylon fabric material. 2-pocket climbing bag for storing large valuables. Store your ID, keys, cards and large phones easily. Not only great for indoor climbing and work out, but also a great gift. It is easy to carry with an adjustable quick clip belt and small carabiner. The bag opening is large and has a stiffened rim to maintain shape. This bag can accommodate big hands and a carry a large reservoir of chalk to make sure you won’t get caught short! Customized logo is available.