Who does not know that? Especially in winter, the risk of slipping on the bumper / load sill is high. The product is assembled in no time and of the highest quality, but has a smooth surface, for loading objects is indeed quite reasonable. I have pasted a page with anti-slip strips, workload 3 minutes and have thus a perfect introduction for my four-legged friends. A must-have for everyone, not jump their dogs but rise in the trunk or climbing.