Crisp button up, whether you''re hitting the water or the gastropub, this short-sleeve has a clean, soft style that you''ll love. Crafted from a cotton blend, this laidback button up is the pillar of all-day comfort and outdoor style. The Columbia Men’s Rapid Rivers II Short Sleeve Shirt offers total comfort in the woods, on the pavement, or at surf’s edge. This stylishly casual short-sleeved shirt is made from a cotton blend with a hint of give, designed for two-way comfort stretch and performance. A single chest pocket, button down collar, with button up class. Columbia offers this men’s short sleeved shirt in multiple patterns and sizes. Regular Fit. Extended sizing available. To ensure the size you choose is right, utilize our sizing chart and the following measurement instructions: For the chest, measure at the fullest part of the chest, under the armpits and over the shoulder blades, keeping the tape measure firm and level.