The Dual Flange Eartip is an evolution in Etymotic design. Traditionally, using a 3-flange device, Etymotic eartips allowed for 3 potential points of contact in the ear canal that seals the ear better than the single dome silicone tips on many products. What Etymotic have done with the Dual Flange Eartip is created a tip that is softer, more comfortable, and seals just as well as their traditional 3-flange tip.
This package contains 3 pairs of the Small size eartips that are meant to fit Etymotic earphones. The widest outside diameter of this small tip is 9mm. These tips will fit other brands as well that have an inside diameter of roughly 3mm.