Ready for under layer duties in four seasons, the Woolies 150 Short Sleeve is form fit and functional under ski gear, a dry suit, as a cycling top or on a long through-hike. 18.5 Merino wool fabric is the foundation of this flat seamed first layer. Length from top of shoulder=28 1/4'' (size L). Flatlock seams. Raglan Sleeves. 1'' cuffs. Weight: 5.6