Instead of reinserting the cork into an unfinished bottle of wine, simply slip one of these flexible caps over the mouth to form a snug seal.
Effective on any smooth, non-threaded bottle neck about 1" in diameter (with wrapper removed), the cap will not leak, even if the bottle is stored on its side.
Made of food-grade silicone, the low-profile, reusable caps clean with a quick rinse. Recommended for use with still (non-sparkling) wines only.
Excellent stocking stuffers for any wine lover on your list. Sold in pairs.