Have this Ruchsack bought for love our 5 month old puppy (French Bulldog, 6 kg). The backpack had enough space for our dog, but that was really the only positive. After one use, ripped from the strap, also the rod broke for Stabilsierung from the upper part of the backpack. The zippers were very difficult to open and close and to make matters worse, they burst then click on a page in the middle of the walk, so I had to run all the time next to my partner, because I had to be afraid that my puppy falls from the backpack , Real horror! The Karibinerhacken which is supposed to prevent the falling out, in my opinion, holds in no case, if the dog really wants to jump out of the backpack, looks very fragile and poorly processed from. The comfort is really equal to zero, the backpack presses down much in the back, which is really very painful for a long walk. Overall, the backpack seems really very poorly finished and is really dangerous place helpful !!!! Have him now returned.