The 260 Zone LS Crewe is a warm base layer top that features optimised fabric zones for active performance during highly active adventures in cold conditions. A touch of LYCRA adds stretch, mesh eyelet in the underarms and upper back actively control temperature during high output adventures and a jersey waffle in the high wear elbows and forearms add abrasion resistance. To top all this off, raglan sleeves and flatlocked seams add chafe-free mobility when you're pushing hard.