Columbia OMNI-TECH (Waterproof & Breathable) Khaki S This is a 3-in-1 jacket with an interchange system, featuring a set of outer and liner. The outer jacket is equipped with the waterproof and breathable "Omni-Tech" function, fully seam-sealed for high waterproof performance and breathability, keeping the wearer comfortable. I am selling this because I no longer use it. Please only purchase if you understand that this is a used item. Please note that it will be shipped with simple packaging with only waterproof measures.