Features of the Icebreaker Women's 150 Zone Long Sleeve Half Zip Top Corespun fabric for enhanced durability Lycra content for stretch and mobility Zip neck collar for temperature regulation Strategically placed merino mesh for ventilation Flatlock seams prevent chafing Raglan sleeve construction for mobility Underarm gusset for comfort and mobility Dropped front and back hem for added coverage Icebreaker heat transfer logo Comfort, warm, breathable, lightweight Fabric Details Body: 83% Merino wool, 12% Nylon, 5% Lycra Eyelet: 84% Merino wool, 15% Nylon, 1% Lycra