Drop Stop: Wine Pourer Pack of 2 Discs. DropStop® is the result of an invention by the Danish inventor, Brian Vang Jensen, made some years ago after an unfortunate event at a dinner party. What makes a successful product? Three key criteria are vital: Outstanding design • Ease of use • Actually solving a problem DropStop® successfully meets all three criteria. Beautiful to look at, simple to use and extremely functional, DropStop® has become a world-wide success, used in millions of wine bottles in more than 40 countries. Simply roll up DropStop®, insert it into the bottle and pour the wine without spilling a drop. Due to its flexible material, DropStop® fits in every bottle. Rinse off the disc once finished and store again for use another time.