This is a road flare! It's shatterproof, crushproof and rainproof, meaning it can withstand all sorts of difficult terrain and weather conditions. Plus, its wide application makes it perfect for many purposes - traffic control, warning light, SOS rescue beacon, and more. And because the bottom has a hook as well as a strong magnet, it's easy to use in both bicycles and cars. Warning signals are visible up to half a mile away, making this an essential tool for any driver or cyclist.
