Direct answer: An insole pre-shipment inspection (PSI) checklist is the last structured chance to verify that bulk matches the golden sample before goods leave Guangzhou. For B2B buyers, PSI is not theater — it is how you protect retail chargebacks, marketplace returns, and landed-cost assumptions. JIJIA Insole Pro programs typically plan bulk in about 7–15 days after sample approval, with sampling in 5–7 days and a commercial floor of MOQ 1,000 pairs per SKU. This guide gives a practical 16-item QC table you can attach to POs and third-party inspections. Buyer-requested testing and reports are available on request; this page does not invent certification badges.
Key Takeaways
- Inspect against a retained golden sample and written tolerances — not memory.
- Include packaging and carton marks in the same checklist as foam quality.
- Define sampling quantity and AQL before production ends.
- Hardness (Asker C), thickness, and bonding failures are common silent defects.
- A future downloadable checklist can support lead capture; today, start via contact.
V2 16-Item Pre-Shipment Inspection Checklist
| # | Check item | What to verify | Fail signal examples |
|---|---|---|---|
| 1 | Quantity | Pairs per SKU vs PO; size breakdown | Short shipment; wrong size curve |
| 2 | Size | Marked size vs physical length/fit reference | Mis-marked pairs; mixed sizes in pairs |
| 3 | Material | Foam/cover/gel vs golden BOM | Substitute cover lot; missing gel |
| 4 | Thickness | Mapped points vs tolerance | Heel or forefoot out of range |
| 5 | Hardness (Asker C) | Agreed window on specified zones | Too soft/hard vs golden |
| 6 | Density | Spec or comparative feel/weight check | Noticeably lighter/heavier lot |
| 7 | Color | Shade vs approved standard under agreed light | Visible shade drift across sizes |
| 8 | Logo | Placement, orientation, completeness | Offset, missing, wrong color |
| 9 | Printing | Clarity, rub resistance expectations | Smudge, bleed, low adhesion |
| 10 | Bonding | Gel/cover/shell adhesion | Peeling edges; voids |
| 11 | Surface defects | Pits, stains, contamination | Oil marks; crushed cells |
| 12 | Edge trimming | Clean trim, symmetry, no sharp flash | Rough flash; uneven perimeter |
| 13 | Packaging | Bag/box/insert vs approved proof | Wrong language; missing insert |
| 14 | Carton marking | SKU, size, qty, barcodes, ship marks | Unscannable codes; mixed cartons |
| 15 | Sampling quantity | Pre-agreed pull count by lot | Inspecting too few cartons |
| 16 | AQL | Agreed acceptance quality level | No AQL stated; “looks fine” only |
How to Use the Checklist on a Real PO
Attach the table (or your adapted version) to the purchase order and to any third-party inspection booking. Reference the golden sample ID, hardness windows, thickness map, and pack proof version. Without those anchors, inspectors can only give opinions. Align PSI timing inside the production calendar described in production lead time and OEM lead time so you are not inspecting after the vessel is gone.
Commercial context lives on OEM, custom manufacturer, private label, products, and contact. Sampling discipline that makes PSI possible is covered in sample process and sampling guide.
Critical Defect Thinking for Insoles
Not all defects are equal. Bonding failures, wrong sizes, and barcode errors are often shipment-stopping. Minor cosmetic issues may be sorted. Define critical / major / minor categories with your team before inspection day. Sports and anti-fatigue builds may weight compression consistency higher; gel programs weight bonding; orthotic-style programs weight geometry symmetry. EVA vs PU choices change which surface defects are typical — see EVA vs PU and OEM comparison.
Hardness and density checks should use agreed methods. If you specify Asker C, make sure the inspector has the right durometer and zone map. “Squeeze test only” is not a substitute when your retailer cares about repeatability. Deeper test menus appear in how to test insole quality. Restricted-substance or market documents are separate from PSI visuals — see EU/USA certifications.
Packaging and Carton Marks: Where Brands Get Hurt
Perfect foam in the wrong box still fails retail onboarding. Verify languages, warning statements (non-medical), barcodes, and inner counts. Carton marks should match the packing list and commercial invoice. Mixed sizes in a carton labeled as a single size create DC chaos. Private-label buyers should keep dielines tied to the PO using habits from the RFQ checklist.
Quantity and size-curve verification protects MOQ economics. If you ordered 1,000 pairs/SKU with a defined assortment, PSI should confirm that assortment — not only total pairs. Shortages discovered after sailing become landed-cost problems overnight (landed cost guide, cost breakdown).
Sampling Quantity, AQL, and Third Parties
Agree sampling quantity and AQL before production ends. Random pulls across cartons beat inspecting only the top layer of the first pallet. If you use a third-party agency, send them the golden photos, tolerances, and this 16-item list. Factory self-checks are useful; independent checks are often required by larger retailers. Factory process maturity can be probed earlier with the audit checklist and sourcing guide.
We may offer a downloadable version of this checklist as a future lead magnet. For now, email the team via contact to request a checklist copy for your PO pack — we will not invent a PDF URL that does not exist yet.
Building PSI Into Supplier Relationships
PSI works best when it is expected, not adversarial. Tell factories at RFQ stage that first bulks and tooling changes will be inspected. Serious Guangzhou OEM partners plan for that. Surprising a factory with an inspector on the final afternoon creates rushed packing and incomplete access to cartons. Put the inspection window on the same shared timeline as bulk production and freight booking.
Train your internal team to read inspection photos critically. Blurry images of “OK” edges are not evidence. Require zone-marked hardness readings and thickness points. If a defect is found, ask for sorted quantity estimates quickly so you can choose rework, partial ship, or delay with eyes open. Those choices feed directly into margin models in the landed cost and pricing guides.
Over time, stable SKUs may move to skip-lot inspection policies — but only after several clean shipments and unchanged BOM. Material changes, new covers, new logo methods, or new molds should reset you to full PSI. Keep MOQ reality in view: inspecting a clean 1,000-pair first bulk carefully is cheaper than discovering systemic trim issues across a larger reorder. For test method depth beyond visual PSI, keep quality testing and material buyer guide nearby when writing tolerances.
Buyer Checklist: Before You Book PSI
- Golden sample ID and photos attached.
- Tolerance sheet for thickness and Asker C zones.
- Pack proof version number confirmed.
- AQL and pull count written on the booking.
- Size curve and total pairs on the same page.
- Decision tree for rework vs sort vs delay.
- Inspector contact and factory holiday calendar checked.
- No medical claims on packs under review.
After each PSI, store the report beside the golden sample and commercial invoice so reorder conversations start from evidence. Patterns across two or three shipments teach you which checklist rows deserve tighter tolerances next season — and which cosmetic issues you can safely de-prioritize without raising return risk.
FAQ
Is PSI required on every insole shipment?
Not legally universal, but it is strongly recommended for first bulks, new molds, and retailer-critical launches.
Can we inspect only packaging to save time?
No. Foam, bonding, and sizing defects escape that shortcut and become customer returns.
What AQL should we use?
Follow your retailer or internal quality policy; write it explicitly rather than inheriting a vague factory default.
Does JIJIA support third-party inspections?
Yes — coordinate timing with production so inspectors arrive when cartons are ready, not before.
How do we get help applying this list?
Send your PO assumptions via contact and ask for a PSI plan aligned to your SKU.
Next step: Attach these 16 checks to your next Guangzhou PO and message Contact if you want a checklist copy for your team. Pair PSI with the OEM program so quality control is scheduled — not improvised on the loading dock.