<b>Features:</b><br>- 100% SAFE FOR YOUR HEALTH: Made of High Quality silicone. Has sleek finish and no odor.<br>- LEAK-PROOF AIR RIGHT SEAL: Silicone seal locks in bubbles to preserve champagne’s freshness longer and keep it from going flat too quickly.<br>- EASY TO USE & COMPACT: Insert and clip to the bottle neck. After use, washing after running water. It is compact for easy storage.<br><br><b>Specification:</b><br>- Size: 1.57*1.57*1.18 inch<br>- Material: Food Grade Silicone and Plastic (BPA and Pthalate Free)<br>- Color: Black<br><br><b>How to use:</b><br>- 1. Rotate the upper part anti-clockwise to UNLOCK before used.<br>- 2. Insert firmly into the bottleneck, rotate the upper part clockwise until a click sound to LOCK the seal.<br>- 3. To open again, unlock the stopper before removing it.<br><br><b>Package includes:</b><br>- 4 × Champagne Stoppers