Winter cardio of all kinds fuels our warm, breathable and uber-aerobic Fernos Vest. The key to its core-warming performance is 40-gram PeakFill(TM) Active Insulation, a highly breathable, quick recovery, spiral filament synthetic fill. Easily compressible into small spaces like a ski pack or running vest, it lofts back promptly when called on for treeline, ridgeline or rest-break warmth. Mechanical stretch and side-seamless construction enhance mobility and reduce layering friction. A single zip chest pocket secures a wallet and keys, while a rear drop tail and reverse coil YKKA(R) zipper complete the fast, streamlined aesthetic. Product Features: PeakFill(TM) Active Insulation Microfiber with soft hand and mechanical stretch offers comfort and range of motion Water-repellent finish resists water and reduces dry time Structured self collar provides additional, no-fuss coverage Hanger loop on center back neck YKKA(R) center front zipper with custom StioA(R) zipper puller Zippered chest pocket Zippered handwarmer pockets Regular Fit: A casually shaped design that&&';;s not too tight and not too baggy Center Back Length: 27 1/4" (Size M) Weight: 10 oz. Heat Transfer StioA(R) and Pinecone logos Heat transfer interior labels for comfort Made in Vietnam