Savior! I used this sidewall repair kit to fix my ATV trailer in the snow. I wasn't sure if/when I would ever need it, but I like to be prepared for any situation. $20 wasn't much and it saved a tire and maybe a rim if you're out in the woods. Also, it was very easy to use! When it comes down to it, I applied this at around 30ยฐF and only needed a pocket knife to clean out the hole. Now I have a set handy every time I go out!