Our Small Dry Box is the perfect dry-storage accessory for your boat. Waterproof, airtight, crushproof. Made of clear plastic with a lockable lid, lanyard and belt clip, it fits perfectly into the slots of all of our cup holders. Its 2.5" x 3.25" x 5.5" interior dimensions allow you to safely hold your keys, wallet, cell phone, PDA, cigars, etc...