Best Use: Packable Mid-LayerPeloton 200 introduces another revolutionary Toray innovation - Karuishi fleece, which has a special brushed fabrication that traps warm air inside the fabric. The hydrophobic nature of the fabric wicks moisture away from your skin so it can quickly evaporate, keeping you dry. The Zip-T design enables you to keep warm in cold conditions, and release heat with the half zip collar as conditions change. Toray's medical division Makspec odor control treatment, applied to all 200 styles, helps block odor-causing bacteria from penetrating the fabric, allowing for extended wear.