CARHARTT MENS WASHED DUCK SHERPA-LINED MOCK-NECK VEST. Size Medium. Color Black. Zipper internal pocket and Velcro internal pocket. From the Carhartt website: A warm, sherpa-lined vest for men. On a cool day, layer up and head out into the field in this vest. Made with our rugged cotton duck, it's sherpa-lined on the inside for extra warmth and comfort. A zip pocket on the chest and two inside pockets provide storage for the tools of your trade.