The Patagonia M’s R1® Pants are your go-to midweight layering piece for cold conditions, whether you're slipping into waders on frosty mornings or decompressing after a long day on the river. Made from a breathable, stretchy grid-fleece fabric—a blend of 93% polyester (41% recycled) and 7% spandex—these pants deliver optimal warmth, moisture management, and packability.
Comfortable next to skin and easy to layer, they’re equally at home under shells or worn solo in the drift boat. Fair Trade Certified™ sewn, because performance shouldn’t come at the cost of people or the planet.
R1® Grid-Fleece Fabric
Breathable, stretchy, and moisture-wicking for active comfort; made with 41% recycled content.
Versatile Layering Fit
Lightweight and low-bulk design allows seamless layering under waders or shells.
Dialed-in Comfort
Elastic waistband with internal drawcord for an adjustable, stay-put fit.
Everyday Functionality
Two front pockets to stash essentials pre- or post-mission.
Style No.: 82156
Weight: 340 g (12 oz)
Country of Origin: Made in Colombia
Warm, breathable, and built to move—R1® Pants are a cold-day gamechanger for any angling adventure.