What is the difference between a fit sample, PP sample, TOP sample, and final inspection?

A fit sample is used to check silhouette, measurements, proportion, and basic construction. A PP sample, or pre-production sample, is the approved production standard before bulk starts. It should confirm fabric, trims, fit, workmanship, decoration, washing, labeling, and packing details. A TOP sample, or top of production sample, is taken from the first pieces made on the production line to confirm that bulk production matches the approved PP sample. Final inspection happens after goods are finished and packed. It checks appearance, measurements, workmanship, labeling, quantity, and packing before shipment. For custom streetwear, these sample stages help brands reduce the risk of bulk inconsistency.