A softside set trades the molded shell for three things travelers actually use: give (fabric overstuffs into a full overhead bin where a hard shell simply will not go), pockets (external compartments for a laptop, documents and the liquids bag), and weight (fabric bags are usually lighter than the equivalent hardside). What you give up is weather resistance and crush protection.
We ranked these six on fabric quality first, then empty weight, wheels and warranty. Fabric grade is the spec that separates a set that looks tired after a year from one that does not, and it is the one most listings bury — where a maker publishes a denier figure or names ballistic nylon, that is a signal worth paying for.
If you have not settled the shell question yet, read hardside vs softside luggage first. For molded sets, see best hardside luggage sets, and for the whole field our best luggage sets roundup.
What makes a good softside bag
Fabric first. Ballistic nylon is the top grade, followed by high-denier polyester, then whatever a budget set uses without saying. Where a maker publishes the specification, that is a sign it is worth publishing. After fabric, look at the zippers — self-repairing coil zippers on a checked bag are the difference between an inconvenience and a ruined trip — then wheels, then the warranty.
Why expandability matters more on fabric
A hardside case expands into a fixed shell shape; a softside bag genuinely swells, and it will keep taking clothes past the point a hard shell has stopped. That is the practical advantage of fabric, and it is why softside is the frequent flyer's default for carry-on. The caution is international travel: an expanded bag can exceed the depth limits European budget carriers enforce, as our international size guide explains.
Two pieces or three?
Three-piece sets look like better value and often are not. The large 28-inch case is the one most people use once a year and store the rest of the time, and it is the hardest piece to keep under the 50 lb checked limit — see our checked bag limits guide. If your travel is carry-on plus an occasional medium check, a two-piece set like the Travelpro is the honest buy.
What we would actually buy
The Travelpro Maxlite 5 two-piece for most people — lightest, best warranty, and the two sizes you actually use. The American Tourister Pop Max if you want three pieces without premium money, and the Samsonite Ascella 3.0 if you want the best three-piece set here and the budget allows.
Softside is also the format expansion suits best, for a mechanical reason: a fabric gusset expands into a shape the bag can hold, where a hardside expansion has to push two rigid shells apart. If that feature is why you are here, our best expandable luggage sets page ranks on published expansion depth and on which pieces in each set actually expand.
How we picked
We did not lab-test these bags
Everyone in this category says they tested twenty suitcases. We have not lab-tested any of these, and we say so. What we did instead: compiled each bag's published specifications, checked its dimensions against the airline sizers, ran the cost-per-trip and weight-to-capacity math, read the aggregated owner reviews, and scored every pick against a published rubric. The scores are judgments from documented research — not measurements we took, because we do not have a lab and we will not pretend we do. Where a number came from someone else's work, we name them in Sources.