COMPATIBILITY - This replacement lid fits 2.28-inch wide mouth bottles, making it perfect for Hydro Flask sizes 12, 16, 18, 20, 32, 40, and 64 oz, as well as Bubba, Simple Modern, Iron Flask, ThermoFlask, BJPKPK, Hydro CELL, Koodee, and other wide mouth water bottles.IMPORTANT NOTE:This lid is NOT compatible with TAL, Hydro Flask Growler series, HydroPeak, Manna, YETI, Nalgene, or OZARK TRAIL bottles. It is also not suitable for standard or narrow mouth water bottles. ATTENTION PLEASE - During the initial use with hot water, the steam generated by the hot water will form mist upon contacting the soft silicone at the spout. The release of this steam might appear as water leakage. This is a normal phenomenon. Simply release the pressurized water during the first use, and there will be no further water leakage in subsequent uses. UPGRADED FLEXIBLE HANDLE & SPOUT - Ergonomic Handle: Designed for comfort, the upgraded handle reduces finger pressure, making it easy to lift and carry with just three fingers. Smooth Spout: The glossy, smooth spout offers a comfortable drinking experience, while the specially designed silicone seal ensures leak-proof performance and easy cleaning. SAFE & DURABLE MATERIAL - Made from upgraded BPA-free PP material, this lid is safe for kids and adults alike. The drop-resistant design ensures durability, even if accidentally dropped during play or outdoor activities. EXCELLENT CUSTOMER SERVICE - If you have any questions or concerns, feel free to contact us. We respond within 10 minutes during business hours to ensure your satisfaction. Fit for 2.28 inch wide mouth bottle.This spout lid is perfect for Hydro flasks 12, 16, 18, 20, 32, 40, and 64 oz wide mouth water bottles, as well as for Simple Modern、Iron Flask、ThermoFlask、BJPKPK、Hydro CELL、koodee and other wide mouth water bottles. IMPORTANT NOTE: The lid is NOT suitable for TAL, Hydro Flask Growler series, hydropeak, Manna, YETI, Nalgene、OZARK TRAIL water bottles. Not suitable for standard/narrow mouthed water bottles.