PATAGONIA - M's R1 Ultralight 1/2 Zip

A lighter, more breathable addition to our R1 family, built to regulate your temperature from big wall climbs to technical traverses and everything in between. It’s almost as light as your favorite baselayer, with a smooth, abrasion-resistant face fabric you won’t have to worry about shredding when you're bushwhacking or on the sharp end. Made in a Fair Trade Certified™ factory.