Binaural champagne stopper is made of stainless-steel and TPR material, which are safe, non-toxic and durable. Feature binaural design, easy to use. Align the bottle stopper with the bottle mouth and press it, then fasten the ears of the bottle stopper on the bottle mouth, and the sealing is completed. Work great for wine and champagne. It can be an indispensable wine and beverage accessory in winery, pub, restaurant, office, or even at home.