The pocket-sized, on-bottle Nicholas VinOair wine aerator is a great tool for oenophiles, allowing you to maximize your wine enjoyment wherever you roam. Just uncork your bottle of wine, insert the Nicholas VinOair into the bottle, and start pouring for immediate aerating of your wine--no need to let the bottle breathe. The dual oxygen chamber pulls twice the vacuum as the other leading aerators, and it's secured by a food grade rubber ring to create an air tight seal. It's a great choice for bringing along on your travels as this compact aerator can fit in your pocket and doesn't require bulky stands like others. This wine aerator should be washed by hand with warm water.