Sponti’s Catalyst Spirit Pourer Aerator enhances the flavor of spirits as it pours for a smoother finish and more enjoyable result. Aerating spirits softens their flavor. Conveniently stores right in the bottle neck. The dual-venturi system with large on/off control button allows refined, on-demand, by-the-glass aeration without decanting the entire bottle or waiting a long time for spirits to breathe. The convenient silicone cover creates an airtight seal to keep spirits fresh between uses. It allows convenient access when mixing cocktails that require several types of spirits, and doubles nicely as a 1/2-ounce shot measure. Vented for a smooth, perfect pour, its elegant glasslike appearance with drip-free spout is perfect for mess-free entertaining. No more stained tablecloths! It easily fits most standard-sized liquor bottles. Easy to use. Simply place the Aerator into the opened bottle and pour to aerate. Press and hold the control button to pour without aerating. Great for most spirits, like whiskey, bourbon, scotch, rum, cognac, port, vodka and gin. Elegant enough for display on the counter, yet compact enough to store in the kitchen gadget drawer or with bar supplies or other cocktail accessories. Great gifts for mixologists. Made from BPA-free, FDA-approved acrylic, silicone and stainless steel. Disassembles for cleaning. Hand wash in warm, soapy water. Do not use abrasive cleaners.