Very good article; sees high-quality than it is; Price / performance ratio good. The mattress protector is on well, the nubs make sense. However, "non-slip" is not on my bed frames made of wood this. It may be possible that the mattress protector on bed bases other material quite adheres well. Since I "slip" can not confirm, I prefer in the evaluation from a star. The article I would still buy again and also recommend it.