Lightweight insulation with active ventilation, the Icebreaker 200 Zone Long Sleeve Half Zip provides the baselayer coverage you need for extended cold-weather coverage during all-day skiing or hiking runs. Slim Fit baselayer feature tailored, next-to-skin fit. BodyfitZONE mapped construction places merino mesh panels and heat-retention zones to help regulate body temperature. 200 Light Merino wool: ⢠Lightweight, 200g merino wool blend pairs jersey knit and mesh panels. ⢠Moisture-wicking performance that moves perspiration away from the skin to dry quickly on the surface. ⢠Highly breathable fleece releases moisture vapor from perspiration ⢠Naturally antibacterial design offers odor-resistant performance. Stand collar with zipper garage. Half-zip closure. Long raglan sleeves with thumbhole cuffs. Extended, droptail hem improves coverage. 97% merino wool, 3% elastane; Mesh: 98% merino wool, 1% elastane, 1% nylon. Machine wash, line dry. Imported. Measurements: Length: 31 in Chest Measurement: 38 in Sleeve Length: 37 in Product measurements were taken using size MD. Please note that measurements may vary by size.