The problem with any kind of reflective or bright colored outer wear, is that it has to be the right temperature to wear it.

There is almost an endless number of options that will attach to your bike, your helmet, body, hands, feet, and all your limbs. They will work in the summer heat and the winter cold. It most cases it's cheaper too. And weighs less. Breathable fabrics don't let sweat out fast if you are working pedaling a bike. Possibly OK if you are not working much. There are all kinds of mesh reflective vests that will work great with just a jersey or a heavy jacket.

If you are considering reflective gear or lights, test them out at night by observing them from a distance. It's amazing how many people don't do that.