The ExOfficio Venture Wool -+ Zip Jacket is engineered with Venture Wool which is specially designed to combine the thermal efficiency of PrimaLoft with the natural properties of Merino Wool for superior warmth This unique construction features an ultra quick drying time effective moisture wicking and excellent comfort thanks to the super soft fineness of the fibers This lightweight thermal wool jacket will keep you cozy and dry everywhere winter takes you Venture Wool PrimaLoft / Merino Wool blend for the most warmth Quick drying and moisture wicking to keep you dry Lightweight construction for comfortable wear Fine fibers enhances softness for a cozy feel -+ zip style for easy ventilation