metropolis technology mini wireless iron $139.95 Whether you’re toting it in a taxicab or to Tahiti, this itty-bitty (7.5” long) cordless iron—exclusive to our catalog—is the most compact and convenient portable straightener we’ve seen. (And, we admit, we’re fans of its fetching blue hue, too.) Long-lasting lithium ion batteries offer up to 45 minutes of wireless usage per charge. With 5/8” ceramic plates, 3 heat settings up to 400ºF, a universally compatible charger and a travel pouch.