convenient hold you ID card,name card ,credit card.keep your card clean.all kind of material you can choose. 1)material:neoprene, nylon,foam,eva,canvas are available;2) this bag ,card case,card holder has different color ,stypes are available;3)customized sizes and logo are accepted.4)suitable for coin,credit and so on.5)convenient hold your card, neoprene card case