You don’t know much about art. But you know what you like. And you definitely like sneakers. So you’ll be very interested to hear about International Orange Spa & Yoga Lounge’s new exhibit, “Back to Old School: Vintage Adidas from Harputs.” A retrospective toasting the Mac Daddy of sneaker chic, the sporty showcase traces the shoe to the company’s roots, from never-before-seen styles circa the tube sock and skimpy gym short era, to nouveau interpretations by the Japanese avant-garde (think: Yohji Yamamoto’s streamlined trendy tennies). And if shoes aren’t enough to tickle your fancy, a series of limited-edition bags and classic shoebox designs are also on display. Because sneakers may or may not qualify as art, but shoeboxes? Always. International Orange Spa & Yoga Lounge, 2044 Fillmore Street, between California and Pine Streets, second floor (415-563-5000).