Columbia technolgoy working for you!
Columbia Sportswear's Omni-Tech products provide premium waterproof and breathable protection by keeping outside elements from getting in, while still allowing moisture vapors to move away from the skin. Microporous membranes keep water from penetrating the fabric yet allow perspiration to escape, so you stay dry.
Omni-Tech's first layer of defense is Omni-Shield
, which prevents most water from ever making contact with the inner layers. Next, a microporous membrane provides the primary and most impervious layer of defense by completely blocking the passage of water molecules into the fabric. Omni-Tech membranes are 100% air permeable, which allows moisture vapors to escape. This superior breathability keeps you dry from the inside out. Lastly, lining materials protect the Omni-Tech membrane from underneath, while adding additional wicking properties. Waterproof. Breathable. Guaranteed!