Our highly technical midweight base layer top with an innovative tubular merino knit and zone ventilation, the 200 Zone Seamless Long Sleeve Crewe is incredibly breathable and stretchy for high-output pursuits.Features:- Icebreaker Seamless A seamless construction with targeted knit zones for support and breathability that stretches without friction- Body FitZone™ features breathable zones for high intensity activity- Thumb loops keep your sleeves in place and hands warm- Raglan sleeve construction for mobility- Flatlock seams to prevent frictionSpecifications:- Weight: 234 g / 8.25 oz- Fabric content: 70% Merino Wool, 27% Nylon, 3% ElastaneCare:- Machine wash warm.- Wash with like colors.- Do not use softeners.- Fasten all closures to wash and dry.- Do not bleach.- Do not tumble dry.- Line dry in shade.- Do not iron.- Do not dry clean. Compare prices from: Icebreaker in Men's Underwear