Smartwool Men's PhD Smartloft Divide Full Zip wool Men's sizes: Small = 29-31" waist 36-38" chest. Medium = 32-34" waist 39-41" chest. Large = 35-37" waist 42-44" chest. X-Large = 38-40" waist 45-48" chest. XX-Large = 41-44" waist 49-51" chest. Shell 1: 100% nylon. Shell 2: 97% Merino Wool, 3% elastane. Lining 100% Merino Wool. Fill: 80% wool 20% polyester. Washer and dryer friendly! SmartLoft Wool insulated quilted nylon with DWR front panel, MerinoMax Double Jersey knit sides and back panel; Merino Wool jersey lining on front panel and inside collar. Center front zipper, full draft flap and chin guard. Secure angled zip pocket, media cord grommet, front handwarmer pockets, inside stash pockets. Low profile in-seam thumbholes.