A Bag
This bag has reflectors on it, like the jacket, so it doesn't matter how dark it is, because you'll be seen. It has reflectors on it, so, like the jacket, when the headlights shine off it, people will see the person wearing the bag. And another beneifit is that even though you're increasing your safety, you are also able to carry things in it. You could use this for school, trips, holidays, anything where you need a bag.