the directions on opening the piece of luggage was missing a key point which was that you needed to push in the TSA lock in addition to the instructions provided with the luggage. Necessitated a call to customer service
Having 8 wheels really improves handling over the standard 4 wheel spinners I've had in the past and it has a very stylish look. I also purchased the 24" for my checked bag, where I found that the handle felt a little weak once the pounds were added on (between 30 - 47 lbs), but I was still able to manage quite well.