Opens through a side push device, snaps closed.. The case measures 3.75 inches (95.25 mm) by 3.25 inches (82.55 mm) by .625 inches deep (15.875 mm). Inside the case are two spring-loaded catches to help keep your items in place. This case is perfect for carrying business cards, credit cards, IDs, drivers licenses, money, regular size cigarettes, coupons, hand wipes, shopping lists… things you may find useful while on the go.