When buying luggage look for these signs of durability.

On cases with zippers, look for taped seams, in which a strip of cloth reinforces the zipper and bag connection; this prevents fraying. Exterior joints should be covered with leather, nylon piping, or welts to reinforce the seams and absorb wear and tear. Seams should be lockstitched—a method in which each stitch is reinforced, or locked, to stay in place and stand alone. This way, if one stitch happens to break, it won’t take the next one with it and unravel your seam.