The bag isn’t the best quality tbh, the stitching on the zip has loosened after the first use. The trick is to put quite heavy items in it to make it sturdier, but the wheels are a design fault - absolutely too small. Smaller than most hand luggage for some reason). They got caught in the gap in an elevator door and (scarily) in the gap getting onto the metro at Dubai airport. I love the fact sea but ignored the reviews when I bought it, and paid the price. Mountain buggy should recall this item and replace it with larger wheels.