| Technical brief | Can the supplier interpret design, construction, size range, materials, branding, labels, and pack? | Tech pack, bill of materials, measurement chart, drawings, color standards, and target market | Critical construction or material decisions are left to supplier assumption |
| Development sample | Can the intended silhouette, construction, components, and visual details be produced? | Versioned sample photos, measurements, component notes, deviations, and comment log | Comments refer to an unidentified sample or are not incorporated into the next revision |
| Fit sample | Does the base or target size fit using the buyer's stated wearer and method? | Last identity, wearer profile, fitting notes, pressure or comfort issues, measurements, and approved changes | The supplier declares standard sizing without the buyer's fit method and target customer |
| Size set | Does grading work across selected small, middle, and large sizes? | Graded measurement results, outsole or last identity, fit notes, pairing, and outlier corrections | Only the base size is evaluated before cutting the full production size run |
| Material and color approval | Are upper, lining, sock, outsole, trims, adhesives, finish, and color references controlled? | Supplier, composition, swatch or component, lot or color standard, test need, and approved substitution rule | A visually similar material changes composition, durability, feel, odor, claim, or market evidence |
| Wear and construction check | Does the shoe perform for intended use and foreseeable stress? | Defined flex, bond, abrasion, colorfastness, water or other claim method, wearer result, and failure record | A performance claim has no relevant method or the tested build differs from production |
| Pre-production and top-of-production | Do approved materials, tooling, pattern, process, branding, and packing appear on the production line? | Signed reference, first output checks, revision list, size and color matrix, and corrective action | Bulk materials or construction differ from approved development records |
| Final inspection | Does the lot meet quantity by size/color, pairing, workmanship, function, labels, packaging, and sampling rules? | Lot, size assortment, random sample, defect counts, measurements, photos, carton ratio, and release decision | The packed size mix cannot be reconciled or defects are concentrated in untested sizes or colors |