Stay warm without the bulk during your cold-weather miles or trail hikes. This authentic prAna Insulated Ice Flow Vest delivers lightweight, targeted warmth with a clean, low-profile design that is perfect for layering. Outer Shell Fabric: 100% Recycled Polyester with a PFC-Free Durable Water Repellent (DWR) finish. Collar & Side Stretch Panels: Recycled Polyester Blend knit jersey with a soft, cozy brushed interior. Insulation Fill: 60g PrimaLoft® P.U.R.E. Black high-performance synthetic fill. Polyester fill - missing material tag ( Previous is AI generated.) **Different Brands fit different ways, please check your measurements against the following:** Measurements laying flat: * Length = 23" * Underarm across = 22" * Sleeveless