Arc'teryx Proton SL Hoody

The Arc'teryx Proton SL Hoody is a lightweight insulated jacket designed for cold climbs and other high-output activities in cool conditions. Its Fortius™ Air 20 fabric combines stretch, durability and air permeability with weather resistance from a FC0 durable water repellent finish.

Octa® Loft insulation provides dependable thermal protection while retaining its loft and shape through repeated packing. Articulated patterning supports unrestricted movement, while the adjustable insulated hood, helmet compatibility and secure pockets make it especially well suited to active climbers who need lightweight warmth and mobility.