White Sidekick Deckbox 100+

From the Publisher:

The convertible Sidekick provides very easy access to a double-sleeved 100-card deck. The Convertible line is designed to present cards in new and unique ways. Remove the lid, attach it to the bottom or start tilting your box in a wide variety of ways. This elegant deck box is manufactured with Nexofyber material and protects cards inside with a soft microfiber lining. Powerful magnets keep it safely closed.