Lightweight merino rib-knit baselayer top. Pull on this versatile baselayer when you need a bit more protection from the elements. The Woolies 1 Zip T-Neck has the most coverage of the Woolies insulation line and is guaranteed to keep out winter's persistent chills. Lightweight, breathable, durable, this shirt is about high function and low maintenance. Flatlock seams. Set in sleeves. Wide sleeve cuff detail. Tag-free label. Back length from top of shoulder=28 1/4" (size L). Material: Wool.