A technical mid layer designed to insulate and breathe during cold, high-output days, the Descender Long Sleeve Zip features 240gm textured RealFleece™, which has a high-loft brushed back with heat-trapping channels to help regulate body temperature.Lighter-weight side panels feature corespun fabric for durability, softness and added breathability.Zippered chest and hand pockets stash small essentials, and flatlock stitching and offset seams provide total comfort.Superfine merino fibers are brushed to create icebreaker RealFleece™, a natural fleece that warms and breathes next to your skin.Inspired by nature, icebreaker harnesses the performance qualities of natural fibers to offer an alternative to clothing based on petrochemical synthetics.FEATURES:RealFleece™ - An authentic brushed merino wool that is naturally warm and soft to the touch.Thumb loops keep your sleeves in place and hands warm.Offset shoulder seams to prevent friction.Flatlock seams to prevent friction.Zipper chin guard and interior storm flap to prevent friction.Zippered hand and chest pockets.Merino pocket lining for added comfort.Drop tail hem for added coverage.Benefits:Comfort.Through merino wool Icebreaker is able to create a sustainable product.Wool is a natural, durable and biodegradable product.Icebreaker wool is obtained following ethical criteria and is part of the ZQ program that ensures that farmers take care of the sheep and the land they inhabit.