Centuries ago at Hueco Tanks, Ranger Bob yelled at us to “Come down off the pavilions!” when we horsed around on one’s support struts, bouldering onto its wooden, picnic-table-sheltering roof. We didn’t have our shades on then, but the perfect pair would certainly have been the SMITH OPTICS PAVILION ($119, smithoptics.com), stylish, mediumsized sunglasses that — greenly — are made from castor oil (the Grilamid TR90 frame) and packaged in Forest Stewardship Council-certified paper boxes. The shades come in seven bizzled colors. Meanwhile, the Grilamid offers a nice, versatile, hard-wearing shape, and the carbonic TLT lenses (polarized or non-polarized options) brought mad, laser-sharp ruckus during my week of bright, snowy December testing. You also get a bamboo microfiber cleaning bag.