I have (not Amazon) buy this UB 100 Beurer because of the good reviews. - This underblanket is worth complete 5 star !!! But that was the Beurer people said what bungler, dormice, construction beginners was obliged, such (The emphasis is on such) a connector to attach -da-! You can still incredulous smile - or beat my criticism in the wind .... You will remember my words !!! This connector is the Horrrroooorrrr. I know it is necessary due to a possibly washing process, but to verlegen- him exactly at the elbows No. He annoys without end. Diameter = 63 mm (!) Thickness = 25 mm (!) And he Wurd quite warm too! I did not until now that one of his own elbows can spoil the falling-asleep. Summary: Under this bed is technically brilliant! Absolute buy recommendation! But the plug is completely - out of place - and a size too big. Too bad.