For those who prioritize performance, the Mammut Aenergy IN Hooded Jacket Men offers exceptional cold weather protection for mountain adventures. This jacket features responsibly sourced hydrophobic down filling, strategically placed in small chambers to ensure optimal insulation even in wet conditions. The ultralight, recycled nylon outer material allows the down to expand fully, providing superior warmth. Whether used as an extra-warm layer or a compact thermal backup, the Aenergy IN Hooded Jacket is perfect for mountain athletes seeking lightweight gear without compromise. Lightweight and packable for easy carrying Hydrophobic down filling for insulation in wet conditions Ultralight recycled nylon outer material for optimal insulation Elasticated hood for a snug fit Smooth-operating YKK Vislon® front zipper Two zipper pockets compatible with backpacks and climbing harnesses Jacket can be stowed in its side pocket for convenience Pre-shaped sleeves for better mobility Low packing vol