Come and see our amazing products. The running arm pocket is made of the quick-drying polyester and spandex material. It can be used as wrist and arm band/ wallet/ bags/ sleeve/ strap/ pouch. Ensuring that it will be extremely comfortable on your arm no matter your arm size or size of phone you have. The hidden storage space is large enough to hold most sizes phone. It can even fit cell phone, credit card, ID, cash, coins, mobile, keys and more. It is flexible, soft, slim and lightweight. It is used for fashion accessory for promotion in a company event, or present your brand or an event. Pls confirm with us about the packing info, stock color and exact production time before placing your order.