Patagonia M's AC Shirt Midlayers close-fitting design that works in

close-fitting design that works in harmony with your pack or on its own

Earflaps can be worn down for warmth or tied up as temperatures change

Zippered hand pockets for secure storage

making it light enough for all-day comfort while offering just the right amount of warmth

The classic single screw line guard adds to the traditional design of the reel

Patagonia M's AC Shirt Midlayers close-fitting design that works inPatagonia Ms A C Shirt Lightweight Comfort for Hot & Humid Climates Designed for maximum breathability and comfort, the Patagonia Ms A C Shirt is made from 100% organic cotton with an airy, open weave fabric that lifts away from the skin, promoting airflow to keep you cool in hot and humid conditions. Whether you're traveling, exploring, or just enjoying a summer day, this relaxed fit shirt delivers lightweight, all day comfort with a timeless look.