evo.com | Outdoor Research Button-Downs > The Outdoor Research Ravenna Flannel Shirt does double duty as a trail layer and a town shirt without missing a beat. A bluesign approved blend of cotton and recycled polyester breathes and wicks sweat on the approach, while UPF 40 sun protection and a relaxed shirttail cut make it just as comfortable at the brewery afterward. Regular Fit Center Back Length 74.9 cm / 29.5 in UPF 40 bluesign(R) approved 53% Cotton 47% Recycled Polyester Breathable & Wicking | Outdoor Research Ravenna Shirt Men's 2027 - Medium Brown | Cotton/Polyester