Top Compatibility: For ThermoFlask(18/24/32/40/64 oz), For Simple Modern Summit(10/14/18/22/32/40/64/84 oz), For Iron Flask (22/32/40/64 oz), For Hydro Flask Wide Mouth Water Bottle (12/16/18/20/32/40/64 oz). Upgraded: The enlarged bite valve increases water output from the thermoflask bottle for faster drinking and instant hydration after exercise, making it perfect for post-workout recovery. BPA free: All materials are BPA free to protect your drinking safety. The flex handle and sturdy rivets allow the simple modern to easily attach to your backpack or other gear, freeing up your hands for the journey. Easy to Install: You only need to cut the straw to fit your bottle height, insert it into the lid, and screw the lid onto your iron flask. This means you can spend less time setting up and more time enjoying your adventure. First-Rate Service: Contains 1 Black Lid, 1 Teal Lid, 4 Straws, 2 Straw Brush. If you have any problems during your using, please contact us through Amazon. compatible with hydroflask straw lid, compatible with Simple Modern Summit straw Lid, compatible with ThermoFlask straw Lid, compatible with Iron Flask straw Lid, compatible with Takeya straw Lid, compatible with MIRA straw Lid, compatible with FIFTY/FIFTY straw Lid, Q: Does it fit all wide mouth bottles? A: This lid is compatible with most major wide mouth bottles, including Hydro Flask, ThermoFlask, Simple Modern (Summit), and Iron Flask, and will not fit standard mouth bottles. Q: Can it be used with other bottle brands? A: Yes, it fits several popular brands: Hydro Flask, ThermoFlask, Simple Modern (Summit series), and Iron Flask. Please check your bottle size and lid threading to ensure compatibility. Q: Can it go in the dishwasher? A: Yes, the lid and straw are top-rack dishwasher safe. For best results and longer life, we recommend removing the bite valve and hand-washing occasionally. Q: Is the bite valve removable? A: The bite valve is not detachable, but you can still clean it thoroughly using the included cleaning brush. Just insert the brush into the straw from the bottom to reach and clean the valve area effectively. Q: Is the lid leak-proof? A: Yes, when properly installed, the lid provides a tight, leak-proof seal—perfect for hiking, the gym, or everyday use. Q: Does it fit 40 oz bottles? A: Yes, it fits 40 oz bottles from Hydro Flask, ThermoFlask, Simple Modern, and Iron Flask wide mouth series. Q: Does it come with a cleaning brush? A: Yes! The package includes 2 straw cleaning brushes for convenient maintenance. Q: Is it easy to clean? A: Absolutely. The included cleaning brushes make it simple and hygienic to keep your lid clean. Q: Does it fit wide mouth bottles? A: Yes, it is specifically designed for wide mouth bottles from compatible brands and will not fit standard mouth bottles.