1. [Compatibility]The spout 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 2. [Top-notch Quality]Bluwing has undergone 2 upgrades to ensure its lid can withstand inevitable bumps and drops in daily life, making it durable and long-lasting. The BPA- PP material ensures pure drinking water with no unpleasant plastic taste 3. [Thoughtful Design]We understand deeply that lips are one of the most sensitive areas of the body, with nerve endings density 100 times higher than fingertips. Based on the shape and high sensitivity of the lips, the lid's drinking mouth adopts curves and shapes that conform to ergonomic principles, smooth and glossy, ensuring your drinking experience is more pleasant and comfortable 4. []The wide and thick handle accommodates three fingers, dispersing the gravity of the water bottle during walking, preventing finger pain. Whether you're camping, hiking, kayaking, or rock climbing, it's easy to replenish your hydration