The Envirosax Organic Cotton Series ($24.95, Envirosax.com) folds up into a little storage pouch so you are poised for green shopping at any moment. The Poco pattern, a cute running dog print in Organic Peruvian cotton, is a particular favorite but there are lots of other beautiful options in bamboo, linen or hemp. Plus, the company supports a local Peruvian farm co-op—encouraging legal crops and sustainable water practices.