The On Men's Insulator Jacket keeps you warm whether you're exploring in the mountains or the city. Thanks to a technical blend incorporating Swiss sheep's wool to provide warmth that doesn't stifle performance, staying lightweight and breathable in all-weather conditions. Unlike with some other insulated jackets, you won't find insulation escaping from the outer stitching because this jacket uses interior stitch lines that locks in heat and the reduced padding at the sleeves adds flexibility. Additionally, this jacket features a mini-ripstop outer that is ultralight and durable and an adjustable hood that keeps out the chill. Temperature changes fast in the mountains make sure you're prepared with the On Men's Insulator Jacket!