These reflectors are a must-have for any automotive vehicle. As a result of my tests, I determined that these reflectors are incredibly adhesive and waterproof, which ensures they stay in place even in the harshest weather conditions. These reflectors are rectangular and highly visible which makes them ideal for heavy-duty vehicles. One downside is that the price may be a bit steep for some. Overall, these reflectors are a top-notch addition to any commercial vehicle.