Men's Smartwool Anchor Line Long Sleeve T-Shirt,Button Up 4017-SW000122 Looks like a shirt. Performs like a jacket. Don't let the fun plaid pattern and snap closures make you think this is a stay-inside shirt. Our Anchor Line Shirt Jacket starts with 80% Merino wool, so it can fend off all sorts of harsh conditions. Two secure chest pockets add function to the form. A hard-working 3-season essential that likes to get outside and play. Features Back vent at hem for added mobility Merino Wool blend lined on cuffs and around collar Knit in Vietnam: 80% Wool, 20% Nylon Relaxed fit Snap closures at center front, pockets and cuffs Two secure chest pockets Men's Smartwool Anchor Line Long Sleeve T-Shirt,Button Up