Made with stretch neoprene and a unique heating element design our insulated travel bottle warmer stretches and contours to fit any shape bottle ??" even tapered ones, to warm quickly and evenly. Convenient design fits cup holders and hangs from the dashboard. Features include a power indicator light and a thermal fuse to prevent overheating. Works up to 50% faster than others. Plug it in to any vehicle lighter to warm food and bottles as you drive.