To judge whether a pair of jeans is durable or not, look at the waist first.
The waist is the most powerful position for pulling the whole trousers. The ordinary single-layer waist is loose after washing a few more times, and bending the waist directly curls the edge.
High-quality jeans will make a double-layer waist, superimposed double-channel thick line lock seams, and two layers of fabric will fit together to spread the tensile force.
Squatting, sitting for a long time, and large-scale activity are not easy to collapse, and after repeated washing, the waist shape is not easy to collapse.
The inconspicuous waist seams are the invisible details that determine the life of the trousers.