Ride Out Cold, Stormy Days Like a Pro.Thanks to an ingenious collar that transforms into a neck warmer, the men´s Burton Midweight Long Neck Shirt is basically a cure for cold days.And when the weather has harsher plans, it´s got the tech to keep you dry and fresh too.FEATURES:-DRYRIDE ULTRAWICK MIDWEIGHT BASELAYER [92% RECYCLED POLYESTER, 8% SPANDEX] Double Side Peached using HeiQ odor control technologies, Front Neck Piecing DRYRIDE ULTRAWICK LIGHTWEIGHT BIRDS-EYE BASELAYER [100% Recycled Polyester].-4 Way Stretch,Anti-odor Technology,Dryride Ultrawick.