【Designed for Hydro Flask Wide Mouth Bottles】Fit for Hydro Flask 12/16/18/20/32/40/64oz models. Also compatible with Thermoflask, Takeya, Simple Modern, Iron Flask, and other brands with 2.28" mouth diameter (excludes Hydro Flask Growler/Standard/Narrow Mouth) 【Slim Curved Handle for Portability】Ergonomic handle contours tightly to your Hydro Flask bottle, creating a sleek profile that slides effortlessly into backpacks, bike cup holders, and car door pockets without snagging 【Safety & Durability Guaranteed】Made of upgraded BPA/PAES/lead-free polypropylene (PP) with anti-crack design. The one-piece straw connector and silicone seal ensure no leaks, even when shaken or tilted 【Quick-Clean Modular Design】Straw, nozzle, and silicone ring detach effortlessly for thorough cleaning. Grooves are designed to resist residue buildup – ideal for smoothies, juices, and ice water. 【Hydro Flask-First Warranty】Flip-top straw opens smoothly with one hand and the straw can be trimmed to match your bottle’s height. If this lid doesn’t fit your Hydro Flask bottle, contact us for a Worry free solution replacement straw lid for 2.28" wide mouth water bottles