Freedom of movement - some jackets promise it, but the Descente Challenger Insulated Jacket actually delivers. That's because its 20K waterproof-breathable fabric includes 4-way stretch and Motion 3D Fit technology. A stretch Moveliner ensures that the lining doesn't stiffen things up. This jacket's 40-gram heatflex insulation package warms, and its underarm vents cool. Other features include tons of pocket space, waterproof zippers and a removable, adjustable hood.