Sun Mountain Men’s RainFlex Short Sleeve Pullover If one minute it is windy and drizzly and the next it’s sunny, the Sun Mountain Men’s RainFlex Short Sleeve Pullover is perfect for the conditions. RainFlex comes fully seam-sealed and with the proprietary RainShield DWR finish, making it waterproof while still offering breathability. Additional features: Fully seam-sealed, waterproof, and breathable Quiet, four-way stretch knit fabric Deep zipper for easy on and off Internal chest pocket and zippered hand pockets Adjustable hem