Product details:

The perfect second skin, the 150 Zone LS Half Zipper has been created with a breathable 150gm merino wool that thermo-regulates, providing snug warmth in the cold and keeping you fresh and comfortable when warm. Icebreaker have also included a touch of lycra to ensure free movement and agility on active pursuits. A vital layering piece, Icebreaker have included merino mesh eyelets for ventilation while flatlock seams prevent chafing and optimize comfort.