Yvon Chouinard is an American rock climber, environmentalist, and businessman. His company, Patagonia, sells outdoor products, outerwear, and food. He was named one of the 100 most influential people
Royal Robbins
…at Tahquitz Rock, Robbins went on to make first ascents of many big wall routes in Yosemite. As an early proponent of clean climbing, he, along with Yvon Chouinard, was instrumental in changing the climbing culture of the late 1960s and early 1970s by encouraging the use and preservation of the natural features…