The Men's L/S Horizon Cypress Woven is a lighweight nylon button-down top by The North Face that is fully equipped with technical features for hiking or fly fishing. For starters this shirt has a UPF 50 rating for sun protection, it has a venting system a the shoulder and back, and it contains as many pockets as possible. When temperatures rise you can use the sleeve roll-up feature and pop the sun roll-up collar for extra protection.