The perfect lid fits Hydro Flask 12, 16, 18, 20, 32, 40 and 64 oz wide-mouth water bottles, and also fits Simple Modern, Iron Flask, ThermoFlask, BJPKPK, Hydro CELL, koodee, and other wide-mouth water bottles with an outer mouth diameter of 2.28 inch. [Easy To Use]One-handed press to open the lid helps you get your favorite drink faster and easier. A quick press back into place locks it in place and prevents leakage. Easily sip while driving or jogging and avoid unscrewing the lid repeatedly, without jeopardizing your safety. [Safe Drinking]BPA-free, odorless, ensuring pure drinking water. No hard-to-clean corners and crevices, eliminating the need for cleaning the straw. Save time and effort. [Excellent Leak Protection]Compared to the old version lid, the upgraded push-on lid comes with a well-sealed leak-proof gasket, allowing you to easily toss the water bottle into your backpack without worrying about leaks. Whether it's for sports, commuting or traveling, you can use it with peace of mind. Colour:Black Material:PP+TPR Package Contents: 3 x Water cup lid