Bluemoona 2 Pcs - Vertical Armband Id Name Tag Card Photo Badge Holder + Black Elastic Strap Arm Band Card Approx WxL: 4.25" x 4.88"(108mmx124mm ) Accepts credit card size cards approx:2.6" X 4.13" (65mm x 105mm) Easy adjustable black elastic ( Adjustable) Card Material:Plastic use for :ID card, badge , Library Cards,Students, Factory worker, Membership,Bus Passes,Credit Cards,office worker etc...