Bags: sizing, QC checks, prices, and evidence

Sizing: translate dimensions into capacity

• Compare width, height, depth, handle drop, and adjustable strap range with a bag you already use.
• Check whether listed dimensions are external; thick walls and narrow openings reduce usable capacity.
• Use the dimensions of the largest item you intend to carry—such as a laptop—not a generic small/medium label.

Category-specific QC points

• Compare front, back, side gussets, base, and handle attachment points for symmetry.
• Inspect zipper tracks, snaps, buckles, stitching turns, edge paint, lining, and repeated pattern alignment.
• Look for collapsed corners, wavy seams, scratched hardware, glue marks, colour transfer, and uneven handle height.

Common quality problems

• Dimensions that do not match the expected capacity
• Weak structure or misshapen corners after shipping
• Rough zippers, scratched hardware, or uneven edge paint
• Misaligned patterns, handles, pockets, or stitching

A practical filtering method

1. Filter first by required capacity and carry method, then by material and construction.
2. Compare prices only between similar sizes and structures; hardware-heavy or lined bags are not direct peers of simple pouches.
3. Prefer QC evidence showing the base, interior, hardware, and side profile—not only the front panel.