Soft as can be on your skin and the waters we love. The 7 Mile button-down is built from crushed oyster shell powder and recycled plastic bottles. Nanolized oyster shell powder provides low thermal conductivity which means it keeps you cool when it's hot and warm when it's cool. The 7 Mile Button-Down Shirt is the ultimate staple of the angler’s uniform. Based on the clean lines of a dress shirt and constructed with a performance fabric, the 7 Mile adapts to changing conditions, both on and off the water. Utilizing new Seawool fabric technology, these button-downs are eco-conscious (40% recycled polyester), UV protective, and also control odor. This extremely soft, lightweight shirt can get you into casting position comfortably or into a nice restaurant without a double take from your server. The name inspiration comes from the iconic 7 Mile Bridge in the Keys - the longest of any other - which required challenging engineering to build, back in the day. When you're looking for a shirt that can go the distance - from home to plane to boat to bar - look no further. This shirt has a relaxed fit, designed to provide unrestricted mobility. If you are in between sizes we suggest sizing down.