So our dog (Maltese) is the belt clearly too large, since it can not really change it as indicated. Man pulling the belt tighter and two minutes later he has come loose again. This is a shame and also the quality of the belt is not great but okay for the price. But what bothered me the most is that no guidance here is how to pull the seat belt through the belt. It's not a loop or similar present and if one simply pulls him by the band on the back it looks very uncomfortable. Too bad because this product would have had quite potential.