Patagonia Liana Tights - Women's 2012: For those who favor synthetic yoga tights to pants, the Patagonia Liana Tights are made of a nylon/spandex jersey knit blend, with a slightly flared leg for high-sweat yoga practitioners who want the moisture-wicking qualities of a synthetic. The tights have a wide, flat waistband, a gusseted crotch, and flattering gathers on center-back seam.