I bought this bag with an ukulele that was made by a different manufacturer than the bag and even so the ukulele fits perfectly inside. It stays nice and snug with out any movement. Even the tuners didn't move so the uke was tuned exactly as before I put it in the bag.
The soft bag also comes with a zippered pocket that is quite big for a ukulele sized bag and I added there, the tuner, some chord charts and songs.
The bag is completely waterproof and I tested it without actually wanting, when I found myself in the middle of a storm. When I got to some cover after a long walk through the rain, the inside was dry as dust.
If you have an expensive, cheap or any ukulele, I highly recommend this bag, it is well worth the money.