BCW 2-piece Slider Box
These tough, handy plastic boxes holds up to 10 cards. The two parts slide together with a friction fit to really protect your cards. They are a very convenient size that fits easily into your pocket. They are 3/8″ thick, stackable, crystal clear and hold standard sized trading cards and other collectibles up to 2 1/2″ x 3 1/2″. Note that they are designed to hold loose cards not cards in sleeves.