Mid-weight merino interlock knit baselayer top. Versatile, durable, and naturally stink free, the Woolies 2 Zip T-Neck is designed for years of adventures. If you pull this 100% merino shirt on at dawn there's a good chance you won't take it off till bedtime (or at all if the woodstove isn't cranking). 10'' zip neck with locking pull. Flatlock seams. Set in sleeves. Tag-free label. Back length from top of shoulder=28 1/2'' (size M). Material: Wool.