Our fleece today has come full circle. We started our journey to polyester fleece by trying to find a warmer, more breathable alternative to a favorite wool sweater our founder, Yvon Chouinard, loved. Yes, polyester fleece has some advantages over wool, but wool isn’t a petroleum-based fiber, and we like that. And recycled wool is better yet. Blending recycled wool into, say, our quarter-zip fleece pullover styles allows us to emit less carbon than we would using virgin polyester. It also helps us divert quite a lot of clothing from landfills. If you’re looking for the perfect fleece, we haven’t made it yet. We’re still tinkering.