Description of Arcteryx Gamma AR Vest This technical vest is designed as a low-bulk outer layer to safeguard body core warmth while delivering increased range of motion and breathability. Made with tow different Polartec Power Shield textiles, the durable Gamma AR Vest features a lighter weight backpanel to enhance breathability and comfort. Features: Highly breathable warmth Wind and moisture resistant Composite materials Waist length with drop back hem Full front zip with interior wind flap Laminated hem drawcord Two hand pockets Moulded zipper garages Soft brushed lined collar DWR finish Polartec Power Shield Polartec Power Shield 2-way stretch