Like the Solo Windstopper vest, They constructed the Showerproof jacket from S.Cafe membrane fabric that’s made from recycled coffee grounds! Stretchy, breathable, but also winter and water resistant. Designed to keep you dry when the weather turns, the Showerproof also works well on cool, windy days. To prevent overheating we added a ventilated rear panel, to allow heat to escape but prevent water getting in, and for added safety we made sure our Solo logos both front and back are reflective.