The bag has been great. It fits both my mountain buggy terrain and folded carrycot (just), and my uppababy Alta with the folded carrycot, even though both are slightly longer than the given bag length, the flexibility and depth of the bag give extra length. The base is sturdy, the wheels useful, and the zip his quality. The bag was very useful for keeping all the pram parts together and for making it easy to stack and to add extra space for small items without additional cost.
It will be a great large, wheeled travel bag even after we finish with the pram.
Only very minor issues I've had were that it was confusing with the instructional video as it doesn't match the one in the video with the extending zip, and that there's no information on how to set the lock code, so we're stuck on 000 and can't use it.

In true Mountain Buggy fashion, this product was super easy to use! The bag itself is lightweight and can be easily packed into the boot of the car. It made travelling through the airport with a terrain buggy an absolute breeze. I was so worried about our pram being damaged in transit but had nothing to be worried about :)