Why TRAVAH Diversion Bottle? Versatile This unique design combines a vacuum insulated tumbler bottle with a secret screw off bottom to store your valuables. Now you can finally find relief in knowing your items will go unnoticed while not compromising any core features of your favourite bottle. Quality You Can Trust We use food grade 18/8 BPA free stainless steel with no compromises — you can feel the difference. Developed, constructed and manufactured with the user in mind. XL Body From top to bottom this tumbler is 12" and 3" wide. The upper portion of our insulated water bottle holds 17oz (500ml) of liquids with a 3.25" x 3" dry storage container, big enough for credit / ID cards, over 100 bills, keys, bags or other valuables. Fits most cup holders. Multiple Uses Perfect for the beach, no more loose keys and cash. Ideal for the gym, no need to carry around extra items and risk losing them. Staying hydrated while hiking and having a safe storage place can come in handy. If you've ever needed a secret stash spot in your car, home, boat or on the go — look no further. Peace of Mind Relax while your personal items are kept safe and organized! Feel free to contact us at any time, we stand by our 100% satisfaction guarantee or your money back!