Icebreaker Men’s Bodyfitzone Winter Zone Long Sleeve Half Zip A midweight baselayer zip shirt with optimized venting zones for active performance, the Men’s Winter Zone Long Sleeve Half Zip is a technical top for highly active days in cold conditions. Fully functional for warmth, ventilation, and support while alpine climbing, backcountry skiing, or other day-long adventures in the wild, the body features 260gm merino wool fabric with a touch of LYCRA® for stretch and a deep front zip for easy heat dumping. In the underarm panels Icebreaker we uses lightweight, 180gm eyelet merino mesh that actively controls temperature during high-output pursuits, and in the higher-wear areas around the elbows and forearms we added 230gm merino and polyester waffle jersey for added abrasion resistance. Flatlock seams throughout eliminate chafing during fast-paced days. Features: - Fit: Slim - Benefits: Warmth, Breathability, Comfort, Stretch, Odor Resistance - Features: Icebreaker Bodyfitzone®, Zoned Panels For Warmth And Breathability, Deep Venting Front Zip, Flatlock Seams Prevent Chafing Fabric and Care: - Fabric Weight: 260 Midweight - Fabric: Main: 260gm, 97% Merino Wool, 3% Lycra. Mesh: 180 Gm, 98% Merino Wool, 1% Lycra, 1% Nylon. Arms And Lower Back: 230gm, 78% Merino Wool, 22% Polyester - Care: Machine Wash. Dries Fast In The Shade, But Do Not Tumble Dry. Exact