The 16-ounce Bluey water bottle is made of plastic, durable enough for kids to use every day and bring on any adventure. The lid screws on securely and won't leak when the spout is closed, though water flows for easy drinking when the spout is open. It's easy to release for quick access, and the button has a flip-up lock to keep it from activating accidentally. The drinking bottle fits in most car cup holders with a built-in carrying loop on the lid for easy transportation, and with the cover to keep the spout clean and closed, it can be tossed into a bag for worry-free travel. This water bottle is completely BPA free and dishwasher safe, and should not be microwaved.