Double sealing technology for longlasting antileakage freshness. The plug body uses elastic silicone material and an expansion rod structure to automatically fit the bottle mouth and form a double sealing barrier, effectively isolating air to prevent oxidation and extending red wine freshness up to 35 days. FDA foodgrade safe material. 100% foodgrade silicone with safety certification, resistant to and low temperatures (40 C to 230 C). Odorless and does not release harmful substances, can be in direct contact with the drink, meeting baby products level safety standards. Six color options with universal fit for multiple scenes. Color choices include orange, blue, green, gray, purple, and rose. Fits wine, champagne, beer, spice bottles and other glass bottles with a universal neck diameter of 3.6 cm, meeting the needs of family dinners, bars, travel, and other scenarios. elasticity and durable design, 300+ uses. The silicone stopper body can rotate 360 degrees for easy insertion and extraction, resistant to extrusion and deformation. A fixed structural limit helps prevent dislodgement, ensuring longterm tight sealing. Ecofriendly and economical for repeated use. Use scenarios Home dining and wine storage: reseal opened bottles to preserve aroma and flavor for 35 days. Bar or restaurant service: reseal between pours to maintain taste and reduce waste. Travel and onthego: convenient to transport and store opened beverages without leaks.