Sip on top, stash on the bottom. Bindle Bottle's hidden-in-plain-sight waterproof storage compartment lets you slyly stash your ID, keys and cash, along with that favorite snack you've been saving for later. Stay hydrated, organized and discrete. Stainless steel construction, double wall vacuum insulated bottle with screw on/off storage compartment below. Leak proof loop handle lid. Can fit a standard credit card or ID. 20 ounces.