Have ordered due to good reviews this Bettuchspanner. The delivery was fast. However, in my Bettuchspannern shine Clipse not like in the picture but show traces of oxidation - as if the surface were attacked and corroded by acid. The function it does not detract. The clips are firmly seated and the tensioner fulfill your purpose. I was missing however in the item description, the length specification of the tensioner. I will catch up here. In idle state (ie, not renewed and not stretched) is the total length of 35 cm. Extended maximum (not stretched) the clamps are 63 cm long. Stretch can be on max. approx 125 cm. I use them in a 90 cm mattress. For tarnished Clipse and missing length specification there is a points deduction. Otherwise I can only recommend.
