1. Large capacity: 3000ml capacity ensures that you often add enough water. The unique weighing scale function can help you easily and clearly check the daily water consumption, remind you to keep hydrated and drink enough water to drink water throughout the day. Lightweight and ergonomically designed strap, very suitable for hiking, exercise, gym, cycling and any outdoor activities.2. Leak-proof: The original double-clamping and self-sealing structure of the bottle cap, the design is