The document discusses different types of samples used during the manufacturing process, including reference samples, knit downs, mock ups, fit samples, proto samples, photo shoot samples, size set samples, pre-production samples, production samples, and shipment samples. Reference samples are used early in the design process, while fit, proto, size set and pre-production samples are made to test fit and workmanship. Production samples are taken from bulk production for final approval, and shipment samples represent the final packaged product.