As an avid traveler and hiker I’m always conscious about space and weight. The Vapur Element Waterbottle has come to the rescue. At full capacity, the Vapur Element holds up to one liter of water, and when empty, it folds down to the size of the cap. The Supercap has a built-in mini carabiner that can be used to attach it to your backpack or belt. Made in the USA, the Vapur Element is BPA-free as well as dishwasher safe (although I wouldn’t recommend using it as a giant flask). Once you try this product you’ll wonder why it wasn’t invented decades ago. Buy em here.