This 7oz wrist water bottle is made of food-grade silicone and PP materials, BPA-free, ensuring your health and safety. The mouthpiece is economically designed to prevent air return, ensuring a leak-proof seal while in motion. Plus, you can easily drink on-the-go with a simple bite. No need to open the lid. Stay hydrated effortlessly on the move with Paddie Wrist Water Bottle! It is ideal for morning runs, runners, workouts, marathons, rock climbing, cycling and more.