This hot new product that's lighting up Chinese social media. A pen-sized flamethrower designed especially for women to shoot fire against would-be attackers is now on sale in China. Developed by manufacturer Yipinxuan and marketed for women to scare away sex attackers, the flamethrower comes in a box along with refilling butane gas cylinders. It's only about 8 inches long but can spout flames for up to 10 inches long.