A microclimate powerhouse with breathable synthetic loft , our new flexible insulator serves as a packable heater, extra frosty-day layer or morning warm-up during any cold season mission. PrimaLoft® One insulation warms even when wet, and innovative hybrid fabric construction sheds moisture and, because of its exceptional breathability, won't overheat your core.
The ultimate microfiber insulation. Ultrafine fibers are specially treated in a patented process and then combined into an insulating core that's soft, lightweight and water-resistant. PrimaLoft One absorbs three times less water, is 14% warmer when dry and 24% warmer when wet than competitive insulation.
Our durable water-repellent (DWR) finish causes moisture to bead on the surface so it rolls off or evaporates rather than soaking into the fabric.