True® Lockdown™ Flip-Top Stopper. Just stop it. Push down to seal. Fits standard bottles. Stainless steel, plastic & rubber. Lock up every drop with our Lockdown™ flip-top stopper. For an air-tight seal, flip the chrome lever down so that the two-tone rubber will expand and plug the bottle. www.truebrands.com. © 2015. True Brands, Inc.