This do-it-all midweight layer provides ultimate-weather versatility on the trail. The Thermoball™ Full Zip Jacket is loaded with lightweight Thermoball™ insulation to keep you cosy and agile in seriously cold conditions. It’s as compressible as down yet insulates when wet, so you get maximum performance even through heavy rains and knee-deep rivers. A hem cinch cord helps lock in extra warmth, but when things get too hot, you can take the jacket off and stow it in its own pocket. A shiny zipper adds an eye-catching touch of style.