Patagonia's M's Forge Mark Responsible men's tee is a kind of homage to Patagonia's roots, born in the forge where Yvon Chouinard hand forged the rock pitons that made it possible to climb the mighty walls of Yosemite. These have been replaced over the years by other, less rock-harmful equipment, but they remind us of how Patagonia was born and why today it is committed to the protection and preservation of our planet. In fact, this T-shirt is made from recycled fabrics because it is important to avoid wasting precious natural resources.