MONCLER / Dervox (Blue Guy) Short-Sleeved Men's and Women's Matching Down Jacket Dervox down jacket is made of lightweight nylon lacquered fabric, providing comfort and warmth without feeling bulky. This short-sleeved down jacket features an internal shoulder strap, allowing it to be carried as a backpack when warming up, making it suitable for wearing in cities or on mountains. It features pop color tones and is adorned with eye-catching logo patches.