Review on Katziela Wheeled Pet Carrier Backpack by Elizabeth Adams

I thought I had really looked at this but when I got it I was disappointed the quality of the material is great but no instructions put it together it had 4 wheels but it looks like it has room for 6 wheels, don't know why, i don't think the wheels lock for stability reasons when my dog jumped in and it rolled. This is probably my main reason for returning this product. Also, my pup will break the strap holding the front panel, it should probably be on the outside, not the inside. The zipper looked fine except for one spot that could get stuck. Came back so disappointed :(