Proton FL Hoody Women's 2 layer providing vital core warmth with

providing vital core warmth with liberal mobility and breathability

We took heavy-duty features from out tried and true Guide belt and built them into a lightweight package

Underarm gusset for comfort and mobility

Built with Evolve eco-friendly material

keeping hot spots from developing into blisters

Proton FL Hoody Women's 2 layer providing vital core warmth withBreathable insulated hoody for fast and light travel in cold conditions. FL: Fast and Light. Climb, run, hike choose your day. An insulated hoody created to give you the freedom to explore your way, the light, durable Proton FLs breathable thermal protection delivers comfort across a range of temperature and output levels. Octa Loft knit insulation provides warmth and allows airflow to help regulate comfort. Abrasion resistant Fortius Air 20 fabric