November 2025: ASSOS end of production sale item.
Limited sizes/quantities available.
LIMITED EDITION. An ultralight midlayer, the ASSOS x Mammut Aenergy Light ML delivers warmth, breathability, and moisture-wicking comfort in a packable, go-everywhere design.
For unbeatable performance and versatility while bikepacking or touring, this ultralight, packable midlayer is made with Polartec® Powergrid™, combining warmth with exceptional moisture wicking and breathability. The fleece doubles as a warm base layer to tackle spring/fall routes, summer trails, mornings and evenings in camp, and adventures off the bike. A full zipper delivers optimal ventilation when needed. A zippered chest pocket securely stashes small items. The elasticated cuffs and hem provide a streamlined, comfortable fit.