There's Omni-Heat ... to market leader Gore-Tex and is similarly designed to keep moisture out and let sweat escape. It features in Columbia's everyday waterproof jackets such as the Ampli ...

The waterproof design makes rainy days a breeze — the Omni-Tech outer sheds water and releases excess heat, according to the company. This waterproof, breathable jacket is marked down for up to 40 per ...