Change the way you hydrate with this Zak 6984-V240 Genesis Shells 18 Oz. Flex Sip Bottle! You can sip or chug as much as you want. But no matter what you decide, there are plenty of features you can always count on: the lid has a hygienic cover to keep the spout clean, which opens easily at the push of a button, and disassembles for easy cleaning. A carrying handle built into the lid. Since it is made of durable plastic, everything is long-lasting, completely BPA free, and dishwasher safe. Do not microwave.