This jacket is designed to keep you comfortable all run long. The front is insulated to trap warmth when you first go out, but the back is ventilated to ensure you don't overheat. UA Storm technology repels water without sacrificing breathability Hybrid construction with super-soft synthetic insulation for warmth & stretchy knit collar & cuffs Woven overlay on back for added ventilation Secure, zip back pocket to hold your ID or cards Dropped, shaped hem for enhanced back coverage Reflective logos Raglan sleeves Body: 100% Polyester Knit: 88% Polyester/12% Elastane Under Armour Women's UA Run Insulate Hybrid Jacket Black / Reflective