After 40 years of marriage, considerable travel both here and abroad, and having worn out a variety of brands of suitcases and valises, it was time for some new luggage. Did a fair amount of research looking for reasonably priced lightweight luggage that would be mobile, ergonomic, expandable, and durable, before finally settling on Delsey Helium Fusion Lights. Got two pieces for us each in both the 25" and 21" sizes that would serve for both long and short getaways. So far they've proven to be everything we were looking for. Very happy with the quality of construction, carrying capacity, light weight, and maneuverability. The wheels are in-line rather than swivel type, but they allow perfect ease of rotation and movement on any surface. Further, the bags have been very stable when upright. Can highly recommend this brand.