The Arc'teryx Norvan Insulated Vest, also known as the Atom Vest M, is designed for intense cold-weather activities like mountain running. It is a lightweight and compressible vest offering core warmth without restricting arm movement.

• Coreloft 40gsm synthetic insulation provides warmth, breathability, and compressibility, with 85% recycled content.
• Fortius Air 20 nylon plain weave outer shell is durable, breathable, air-permeable, and made with 42% recycled nylon.
• FC0 DWR (Durable Water Repellent) finish repels moisture and is PFAS-free.
• Tyono 20 wind-resistant face fabric sheds light moisture and blocks wind.
• Lightweight stretch Octa Fleece side panels enhance breathability and allow for freedom of movement.
• Zippered hand pockets secure small essentials.
• Adjustable drawcord at the hem seals out drafts.
• Fitted design with ergonomic patterning for mobility.
• Compressible design allows it to be packed into its own pocket.