I've had one for a few years now. This came in handy several times in winter in the western mountains when someone went off the road. I like that the spring maintains enough tension inside so you don't have to hold it on the vehicle to add tension before trying to get the car out. I also LOVE that everything is self sufficient. So when you're done, the strap simply rolls back into its slot. I bought two more this year for my roommates because it's too good a product not to have in the car for emergencies.