I got I have thought about the different times that we have had flat tires and only the signal of the cars hazards light as a precaution. I thought that this would be like an added protection to have when a tire is being changed at night. You can clip them on your pants or shirt. They have clips on them. If you don’t want to clip them on your clothes then you can hand them around our neck. You get two of these with two elastic bands, one mini screwdriver (to change the battery) and a total of four batteries (one inside each and extra set). These are small but they project a bright enough light to let someone know that you are there. It has three light settings, one – on, two- fast flashing (strobe) and three- slow flashing. You can get you one here http://www.amazon.com/Phantom-Fit-Safety-Light-Pack/dp/B01AA24ADU .You can store one in the car for emergencies and have one in the house for when you are out at night walking, jogging, and bicycling or for your pet. Theses safety lights are something that everyone should have. I would recommend this Phantom fit Led safety light. I received this product for free in exchange for my honest and unbiased review.