The Sunglasses Sampling Process, Step by Step

Sampling is where a sunglasses order is really won or lost. A disciplined sampling process catches problems while they're cheap to fix; a rushed one ships them to your customers at full scale. Here's the full step-by-step process LumiShades uses, with timelines and the controls that prevent sample-to-bulk drift.

Step 1 — Brief and tech pack

Everything starts with a clear brief. Supply frame dimensions, materials, lens spec, color references (Pantone), hinge type, decoration and packaging. The more complete your tech pack, the fewer rounds you'll pay for. Missing details get assumed — and assumptions are how samples go wrong.

Step 2 — Quotation and feasibility

The factory reviews feasibility (Can this geometry be moulded? Will that lens fit that frame?) and returns a quote. Expect a frank conversation about trade-offs — a good engineer will tell you when a spec adds cost for no benefit. Learn the line items in how to read a quotation.

Step 3 — The first sample

For ODM/stock platforms, the first sample ships in 7–10 days. For fully custom moulds, tooling comes first (25–45 days) before any sample exists. The first sample exists to confirm direction: proportion, color, lens tint, comfort. Expect to iterate.

Step 4 — Review and revise

Inspect the sample methodically against your spec, not your memory: measure frame width and lens height, verify UV transmission, test hinge action and spring, check decoration registration and color, and try the fit. Document every change in writing with photos. Each clear revision round costs days; each vague one costs weeks.

"Make it a bit darker" starts an argument. "Lens to category 3, 18% light transmission, matte black frame to Pantone Black 6 C" ends one.

Step 5 — Pre-production sample (PPS)

This is the most important step buyers skip. The PPS is made with the exact materials, color batches and tooling that bulk will use. Approve it in writing and keep a sealed reference — it becomes the contractual benchmark every bulk pair is judged against. Without a PPS you have no objective standard if bulk disappoints.

Step 6 — Lock the gold sample

Both you and the factory retain a signed, sealed "gold sample." Final AQL inspection compares production against it. This single discipline prevents the classic failure of a great sample and a mediocre bulk run. Pair it with an agreed AQL level (2.5 major / 4.0 minor is standard).

Costs and how to control them

• Sample fees are normal and usually credited against a bulk order.
• Front-load detail in the tech pack to minimize paid rounds.
• Approve a PPS — re-running bulk is vastly more expensive than one more sample.
• Use express shipping for samples; the time saved pays for itself.

Summary

Great sunglasses come from great sampling discipline: complete brief, honest feasibility, methodical review, a real pre-production sample, and a sealed gold sample as the benchmark. Follow the sequence and your bulk will match what you approved — every time.