Hat Shape mini wine stopper is made of high-quality ABS and food-grade silicone material, durable, non-toxic and safe to use. Features unique dust cap shaped and rotary lock design, just unscrew the upper semi-circle part of the red wine cork and put it into the bottle mouth, and then turn the upper part back to its original circle position, achieve the function of sealing and keeping fresh. Ideal used at home, restaurants, bars, kitchen and dining.