Innovative bottle cap: fully automatic bottle cap can open and close the bottle independently, so you can enjoy carefree drinking. Environmentally friendly and practical. Made entirely of food contact material, suitable for standard wooden, threaded, glass and PET bottles (screw caps for beer, cola, water, beverage, wine and champagne bottles). Can be used repeatedly and only needs to be cleaned with water. Makes it really practical to open automatically when drinking and close immediately after putting the bottle down Safe and healthy. Protect your bottles, thanks to our automatic caps, your drinks are always protected from the elements, so you can drink safely and securely. Multiple color designs: For garden parties and barbecues, you can now mark your bottles with different colored caps to prevent confusion so you don't have to worry about finding the bottle that belongs to you. Thoughtful after-sales service. The cap fits every standard bottle and because of the great quality, it will stay with you for life and you can always contact us if you have any problems during use.