Oakley Drift O-Puff Jacket Meet your warm, lightweight, all-season layer. The Drift O-Puff Jacket is filled with packable 3M Thinsulate Eco Down for lightweight, durable warmth. Waterproof and treated with Hydrofree DWR, you can wear it on its own for all conditions comfort or as a layer on stormy days. Stretch binding at hood and cuffs help keep warmth in, and an adjustable drawcord at the hem lets you customize the fit. Perfect as a summit-warmer after skinning up. Packable with a built-in stuff sack for the long way down. HYDROFREE DWR A treatment that minimizes water absorption and prevents long term moisture retention within the fabric. Recycled Recycled fabric is derived from post-consumer plastic bottles, which help to reduce C02 emissions in the air and keep plastic out of landfills. The result is a recycled polyester that is breathable, lightweight, and durable.