The Heat Puff collection features advanced Active+ technology with ultralight, nano-grade fibers inspired by aerospace materials, providing exceptional warmth without bulk. It includes large hand pockets for convenience, a snug elasticated hood for comfort, and an adjustable hem to block cold wind. Reflective details enhance visibility in low light, while a chin guard and storm flap ensure comfortable wear by protecting your skin from zipper irritation. Ideal for staying warm and protected across varying weather conditions.