Card Case Coasters hold modern standard sized cards that measure 2.5 x 3.5 inches. These stylish Coaster Cases hold cards in thickness from 1pt to 35pts with most modern standard cards measuring 20pts. The cards are held in place by a clear backdoor and secured by two Phillips head screws. The clear back door allows you to see the back of any cards placed inside but do not form a completely water proof seal. The Coasters are durable and water resistant to drink condensation and regular use. A major accidental spill could damage a card and they are not dishwasher safe with a card inside. They feature an innovative "edge spill ring" design that raises the bottom of the card holding door and prevents water and moisture from accumulating underneath. This design also functions as a stack-able ring that securely fits on top of other Coaster Cases allowing your collection to be clutter free and organized. Available in Baseball, Basketball, and Football themes.