Is the 20-inch suitcase carry-on compliant?

Yes. At 20 inches it fits the carry-on limits of most major US airlines, though gate sizers vary slightly by carrier. Check your airline's exact limit before a strict budget flight.

How does ABS compare with polycarbonate?

ABS is lighter and more affordable but less flexible, so it can crack under hard impacts and scuffs more easily. Polycarbonate flexes back into shape and usually lasts longer under rough baggage handling.

What fits in the 40L suitcase?

Roughly three to five days of clothing for one person, plus a pair of shoes and a toiletry bag. The mesh pocket and cross straps help keep it compressed and organized.

Does the TSA lock work at US airports?

Yes. A TSA-approved lock lets security officers open the bag with a master key without cutting it. Set your own combination before the first trip.

One 20-inch hardside spinner suitcase and one matching travel backpack. The backpack is meant as a personal item, so confirm its size against your airline's under-seat limit.

Can the backpack attach to the suitcase?

The set is designed to travel together, but a fixed sleeve attachment is not confirmed. Plan to carry the backpack or slide it over the telescoping handle if the strap allows.