SmartLoft wool insulation provides warmth and thermoregulation even when wet DWR finish for protection from the elements MerinoMax knit back for ease of movement and breathability Merino lined front panel and collar manages sweat and is antimicrobial Secure zip chest pocket with logo slider and Durawelt grommet for media cord routing Center front zipper with semi-locking logo slider, draft flap, and chin guard SPECIFICATIONS of the Smartwool Men's PhD SmartLoft Divide Vest Weight: 11.39 oz / 320 g Semi-Form fit Shell 1: 100% Nylon Shell 2: 97% Merino, 3% Elastane Lining: 100% Merino Fill: 75% Wool, 25% Polyester■SmartLoft wool insulation provides warmth and thermoregulation even when wet■DWR finish for protection from the elements■MerinoMax knit back for ease of movement and breathability■Merino lined front panel and collar manages sweat and is antimicrobial■Secure zip chest pocket with logo slider and Durawelt grommet for media cord routing