Crafted for punishing ascents in intermittent weather, this adaptable, hardworking midlayer expertly manages your output, even when you're adding and removing outer layers. Delivering the moisture control and temperature regulation you need when you're working your hardest, this is breathable, wicking active insulation which works at the core of your layering system to keep you comfortable and sweat-free. Armed with an unbeatable fabric combination that breathes, traps warmth, and disperses moisture quickly, it's an essential layer for your next bid for the summit.

• Traps warm air in the cosy, fast-drying PrimaLoft® Evolve lining.
• A drop liner and a specially selected combination of fabrics optimise warmth and wicking performance.
• Sweat moves from the inside out thanks to the soft, high-wicking Motiv™ Aero fabric.
• YKK® VISLON® centre front zip.
• We've cut down on loose fabric by seaming the layers together in strategic areas.
• Flatlock seam construction for comfort and easy layering.
• Elasticated hood provides a comfortable close fit under a helmet.
• Elasticated binding at the cuffs and hem for fit and comfort.
• Open the two mesh hand pockets to provide extra ventilation, without the need for pit zips.