---
title: "Case Study: 12,000 Hi-Vis Sets in 45 Days"
url: https://haiyuanworkclothes.com/blog/case-study-middle-east-12000-hi-vis-sets/
date: 2026-10-10
modified: 2026-10-10
author: "HAIYUAN Workwear Manufacturer"
description: "An infrastructure contractor working on a motorway extension in the Middle East needed 12,000 hi-vis sets — Class 2 jacket and trousers — delivered inside 45 days, in a size..."
categories:
  - "Blog"
image: https://haiyuanworkclothes.com/wp-content/uploads/case-study-middle-east-hero-1024x575.webp
word_count: 1669
---

# Case Study: 12,000 Hi-Vis Sets in 45 Days

![Twelve thousand hi-vis workwear sets stacked in export cartons ready for shipment to a Middle East infrastructure project](https://haiyuanworkclothes.com/images/case-study-middle-east-hero.webp)

**An infrastructure contractor working on a motorway extension in the Middle East needed 12,000 hi-vis sets — Class 2 jacket and trousers — delivered inside 45 days, in a size range up to 4XL, with certification valid for the Gulf market. We produced and shipped the order in 38 working days with a 99.4% first-time inspection pass rate, by splitting production across two lines and running inspection in-line rather than only at the end.**

Project Q1 2026 · Client: Middle East infrastructure contractor (anonymised at the client's request) · Products: EN ISO 20471 Class 2 hi-vis jacket and trousers

**12,000**sets delivered
**45**days required
**38**working days used
**99.4%**first-pass AQL

## 1. The brief

The contractor's safety team had specified Class 2 hi-vis jacket and trousers for 4,200 workers across three work fronts, with a size range that ran to 4XL because of the site demographic. The requirement arrived in January with a hard delivery date tied to a project mobilisation milestone: the first 3,000 sets had to be on site within 45 days, with the balance following three weeks later.

| Requirement | Specification |
| ----------- | ------------- |
| Quantity | 12,000 sets (jacket plus trousers) |
| Standard | EN ISO 20471 Class 2, certification valid for the Gulf market |
| Fabric | 240 g/m² poly-cotton, high-visibility orange with navy contrast panels |
| Size range | S to 4XL, weighted towards L, XL and 2XL |
| Branding | Company logo embroidered on the left chest; contractor name on the back |
| Delivery | First 3,000 sets in 45 days, balance in 10 weeks, DDP to site |
| Documentation | Test report naming the style, declaration of conformity, packing list verified per carton |

## 2. The three constraints that made it difficult

None of the individual requirements were unusual. The difficulty was that all three had to be met at the same time.

### Constraint one: the size curve

The site workforce needed substantially more volume in 2XL and above than a standard ratio produces — roughly 35% of the order sat at 2XL or larger, against a European industrial norm closer to 20%. Ordering to a standard curve would have left the contractor short of the sizes it actually needed and holding stock nobody could wear.

### Constraint two: certification timing

The garment had to carry a valid test report, and any new construction needs its own testing. Because the fabric and tape were existing approved components, we could reference the established construction and re-test only the size-specific variant, which saved roughly two weeks against testing a completely new garment.

### Constraint three: the delivery window

45 days from purchase order to on-site delivery includes sampling, production, inspection, freight and customs clearance. With sea freight taking 18–25 days to the region, production had to finish within two weeks of order confirmation — which meant starting before the sample approval if we wanted any buffer.

## 3. How the project was planned

The programme was built backwards from the on-site date, and the first decision was to split the order rather than treat it as one shipment.

| Week | Activity | Output |
| ---- | -------- | ------ |
| Week 1 | Specification review, size curve analysis against the client's headcount data, quotation and purchase order | Confirmed size breakdown and production slots |
| Week 1–2 | Fabric and tape allocation from stock, cutting of the first 3,000 sets started in parallel with sampling | Approved sample and fabric committed |
| Week 2–3 | Two lines running: Line 1 on jackets, Line 2 on trousers; in-line inspection at 20–30% of production | In-line inspection reports |
| Week 3 | Decoration: chest embroidery and back print, with placement checked against the tape layout | Decoration approval against the placement diagram |
| Week 3–4 | Final inspection at AQL 2.5 after packing; carton verification | Final inspection report with photographs |
| Week 4 | Air freight for the first 3,000 sets, sea freight booked for the balance | Shipment 1 dispatched on day 38 |
| Week 5 | Shipment 1 cleared and delivered to site | First 3,000 sets on site inside 45 days |
| Week 6–10 | Remaining 9,000 sets produced, inspected and shipped by sea | Balance delivered in week 10 |

![Hi-vis workwear jackets and trousers being produced simultaneously on two sewing lines](https://haiyuanworkclothes.com/images/case-study-production-line.webp)Jackets and trousers ran on separate lines at the same time, which shortened the critical path by roughly two weeks.

## 4. The four decisions that made the deadline

### 1. Split the shipment instead of shipping the whole order together

Shipping all 12,000 sets at once would have meant air-freighting a volume that does not make commercial sense. Instead, 3,000 sets went by air to meet the mobilisation milestone, and 9,000 travelled by sea at roughly one-eighth of the air cost per unit. The client paid a premium on 25% of the order to protect the whole programme.

### 2. Start cutting before sample approval, on a risk-managed basis

Because the fabric and tape were established components and the client had ordered from us before, we started cutting the first 3,000 sets while the sample was in transit. This is not standard practice and we would not do it for a first-time buyer or a new construction — it was a calculated decision based on an existing specification and a signed statement that only decoration placement could change.

### 3. Run jacket and trouser lines in parallel

The two garments use different constructions and were produced simultaneously rather than sequentially, which removed about two weeks from the critical path. It required the fabric and trims for both garments to be in-house on day one.

### 4. Inspect in-line, not only at the end

An in-line check at the 20–30% mark caught a measurement deviation on the sleeve length of the jacket run — 1.2 cm short across 180 pieces — while the affected bundles could still be re-cut. Finding the same fault at final inspection would have cost roughly four days of rework and pushed the shipment.
![Quality inspector measuring sleeve length on a hi-vis jacket during in-line inspection](https://haiyuanworkclothes.com/images/case-study-qc.webp)The in-line measurement check found a 1.2 cm sleeve deviation at 20–30% of production, while it was still fixable.

## 5. Certification and compliance

Certification was the constraint most likely to cause a delay, because a garment cannot legally ship without the documentation behind its claim.

| Requirement | How it was handled |
| ----------- | ------------------ |
| EN ISO 20471 Class 2 | Existing certified construction re-used; the size-specific variant was tested rather than a new style |
| Retro-reflective tape | Certified tape with after-wash reflectivity data at the client's laundry temperature |
| Declaration of conformity | Issued naming the specific style, fabric and tape, with the certificate numbers the client could verify |
| Gulf market acceptance | Documentation pack prepared for clearance, including the test report and conformity declaration |
| Labelling | Standard, class and care information printed on the garment, plus the size label matching the packing list |

The lesson for buyers: certification is fastest when you build on an existing certified construction. A completely new garment — new fabric, new tape, new seams — adds testing time that no amount of production pressure can recover.

## 6. Results

| Metric | Target | Result |
| ------ | ------ | ------ |
| First shipment on site | 45 days | 38 working days from purchase order |
| Full order delivered | 10 weeks | 9 weeks door-to-door |
| First-time inspection pass rate | AQL 2.5 | 99.4%, no critical defects |
| Size availability at first delivery | All sizes present | 100% of the agreed size curve |
| Air freight premium paid | — | Applied to 25% of the order only |
| Replacement orders | — | Two follow-on orders in the same year |

"The split shipment was the decision that mattered. We needed people on site with compliant clothing on day one, and the balance could follow by sea. The documentation was complete before the container arrived, which is not always the case."
Procurement lead, infrastructure contractor, Middle East — insert a real quote with the client's written permission, or remove this block entirely

## 7. What this project shows about urgent workwear orders

- **Split the shipment.** Air-freighting a quarter of the order usually protects the whole programme for a fraction of the cost of air-freighting everything.
- **Build on an existing certified construction.** Certification, not production, is normally the longest lead item on a technical garment.
- **Share your size data.** The client gave us headcount data by size, which is why the first delivery contained every size the site needed.
- **Accept in-line inspection.** The fault we caught at 20–30% of production would have cost four days at final inspection.
- **Start the freight booking before production ends.** Space in the pre-holiday and peak periods disappears faster than production slots.

![Export cartons of hi-vis workwear being loaded for shipment to a Middle East infrastructure project](https://haiyuanworkclothes.com/images/case-study-loading.webp)The first 3,000 sets shipped by air to meet the mobilisation date; the balance travelled by sea.

## 8. Frequently asked questions

### What is the fastest you can deliver a large workwear order?

For an existing certified construction with fabric in stock, 30–38 working days to the first shipment is realistic, with the balance following two to four weeks later. A brand-new construction needing certification testing adds two to four weeks.

### Can you ship part of an order by air and the rest by sea?

Yes, and for urgent programmes it is usually the right decision. Air-freighting the first 20–30% protects the start date while the balance moves by sea at roughly a fraction of the per-unit cost.

### How do you handle a size range that runs to 4XL or above?

We build the size breakdown from your own headcount or issue data rather than a generic curve. In this project roughly 35% of the order sat at 2XL or larger, which a standard ratio would have under-ordered significantly.

### What documentation accompanies a large export order?

The garment test report naming the style, the declaration of conformity, a verified packing list per carton, the fabric and tape certificates, and the shipping documents. We provide the certificate numbers so your compliance team can verify them.

### How is quality checked on a high-volume order?

Fabric is inspected on arrival with the 4-point system, an in-line check runs at 20–30% of production, and a final random inspection follows ISO 2859-1 sampling at AQL 2.5 for major defects with zero tolerance for critical defects.

### Do you work with contractors on fixed mobilisation dates?

Yes. Send the delivery date, the size breakdown and the certification requirement, and we will confirm within 24 hours whether the date is achievable and which shipment split we recommend.

Facing a fixed mobilisation date? [Send us the date and specification](/contact/) · [See how we manufacture](/factory-tour/) · [Check production deadlines](/blog/chinese-new-year-2027-workwear-order-deadlines/)