Designed for warmth, packability, and comfort, the Men's Smartloft 60 vest uses a nylon shell with a DWR coating to protect you from the elements and 88% recycled Merino insulation to keep out the cold. It's pretty much the perfect take-it-anywhere-it'll-do-anything vest.. . Shell - 100% Nylon; Panels - 48% Merino Wool/44% Polyester/8% Elastane. Regular Fit. Insulation is lined with merino for sweat and odor management. Stretchy knit panels target merino next to skin and polyester against the elements while allowing for ease of movement. Zip chest pocket with cord routing and zip hand pockets. Reflective Elements. SmartLoft 60: Lightest weight (60g) SmartLoft wool insulation for high-intensity workouts in cool to cold conditions. Provides thermoregulation and warmth even when wet. DWR finish (Durable Water Repellent) helps repel water from fabric surface. Wind Protection: Wind-resistant panels protect against the elements. Weighs 10.3 oz.. Imported.