The Womens 260 Zone LS Crewe Top from Icebreaker is a A heavyweight women’s baselayer zip shirt with optimized fabric zones for active performance. The Zone features our BodyfitZONE construction, which combines stretchy merino wool jersey fabric with strategic panels lightweight eyelet merino mesh to improve ventilation and help control temperature during high-output pursuits. In the higher-wear areas we added merino and polyester waffle jersey for added abrasion resistance. Raglan sleeves and flatlock seams throughout make for chafe-free mobility during fast-paced days.