Don’t let the word insulated fool you, the updated OZONE JACKET is our most technically advanced design. Built for and named after a favorite line in Highland Bowl, the Ozone combines our extremely durable Recon Elite 3L stretch fabric and low-profile, synthetic PrimaLoft® insulation. Air-permeable fabric and cutting-edge, NASA-developed aerogel insulation add warmth without weight or bulk, while still shedding excess heat and guarding against the elements, making the Ozone the ideal piece for long days on the mountain in the toughest conditions.