# Is the Wide Mouth Flex Straw Cap leakproof?

> The Wide Mouth Hydro Flip Lid and Wide Mouth Straw Lids are NOT advertised as leak proof, and there is potential for dripping if overturned or shaken. If tra...

Source: https://faq.hydroflask.com/en_us/is-the-wide-mouth-straw-lid-leakproof-SJILNmO4s

Last updated: 2024-06-11T17:29:58.673Z

The Insulated Flex Straw Cap is leakproof when closed.

![](https://www.hydroflask.com/media/catalog/product/cache/0896d24226ba929ed2cdc43dc64054aa/w/f/wfs001-angled-open-strapdown_7.jpg)