The DECANTUS™ utilizes the Bernoulli (a Swiss scientist) effect where the reduced pressure of a stream of fluid (wine) draws an air flow through diagonal thin tubes inside the DECANTUS™. The wider opening on top and larger liquid capacity of the top reservoir bowl makes pouring into DECANTUS™ much easier than with the Vinturi. Wine travels faster through the DECANTUS™ without a whirlpool effect, because of the vertical planar insert. Reduces free sulphites an average of 56%* (see decantus.net). The froth from DECANTUS™ has finer bubbles giving smoother aeration than any other aerator on the market. Made with FDA approved materials.