Review on 🚰 EXIT Collapsible Water Bottle - Foldable Travel Water Bottle - BPA Free - Medical Grade Silicone - Triple Leakproof - Lightweight - 26oz by Will Powers

This bottle is perfect for airport security. Rolled up it's quite small, although the cap has a one-way valve that you have to suck in to drink, an air valve to reinflate the bottle after a sip, and a lockable safety cap to prevent spills. t is very small. It holds 750ml, which just so happens to be a bottle of wine, in case you ever need an alternative to water. Comes with a carabiner clip that you can attach to your backpack, belt loop, or anywhere else. When it's partially empty it's a bit flexible, but whatever. It will always stand down on a flat surface. Very good.