Combining active warmth, movement and breathability, the men's Mountain Flex hybrid vest is ready for all your winter runs. Strategic PrimaLoft® insulation keeps the cold out. And when your temperature starts to rise, breathable HexaFlow panels and smart venting stop you getting too hot, and let you move freely. To keep expanding your comfort zone.

FEATURES

• PrimaLoft®: A high-performance synthetic insulation offering exceptional warmth-to-weight ratio and loft. Retains insulating power even when wet
• ClimateSYNC technology: Developed to adapt to your effort level: ventilation opens during intense activity to release heat and moisture, then closes when you slow down to retain warmth.
• Hexa_Flow™: Designed for mid and outer layers, Hexa_Flow™ enhances breathability with its textured inner surface, preventing fabric cling and maintaining airflow for optimal performance.