Our Mini Snap Card Holder is a rigid, two-piece shell with a snap-tight closure. Made with crystal clear Polystryene and suitable for short or long term storage of cards. These case will fit standard size sports cards and gaming cards with a sleeve. 2-1/2" x 3-1/2" (63.5 mm x 88.9 mm) Internal sizing. Can be stacked for easy storage and transport.