OS 03 Twill Sand Washed Cotton Twill
Frequently bought together.
The OS 03 is our overshirt, inspired by workwear and built to double as everyday layering. Structured fabric. Easy everywhere else. It carries its own weight without any bulk. Wear it open over a tee on a mild day, or buttoned up once the weather turns. Either way, it does the work of a shirt and a jacket at once.
Not sure on size? Check our measurement guide, or .
- Seasonless design suitable for every occasion.
- Regular fit with room to layer over a tee.
- Button-up front closure with a clean folded collar.
- Two front patch pockets in a clean chore construction.
- The ETQ signature square at the back of the neck.
- Silicon washed for a soft hand from the first wear.
- Piece-dyed with reactive dyes for deep, even colour that holds through washing.
- Mid-weight fabric at 260 g/m2.
- Composition: 97% Cotton, 3% Elastane.
- Made in Turkey. Designed in the Netherlands.
- Machine wash at 30°C, inside out and on a gentle cycle. That is all it needs to keep its shape and colour.
- From the collections Menswear and Jackets
Made by specialists.
No single factory does everything well. So we don't ask one to. Every piece is built by the maker who masters that exact craft — the cut, the cloth, the finish. Chosen for skill, never convenience. It shows in how it's made, and in how long it lasts.
Sharp, never stiff.
The ease of your softest loungewear, with the line of real tailoring. The kind of comfort you stop noticing — on a silhouette that still reads refined.
Product design, not fashion.
From our Dutch studio we don't reinvent each season. We refine. The same icons, made better every time — the wardrobe you keep, not the trend you replace.
Made by specialists.
No single factory does everything well. So we don't ask one to. Every piece is built by the maker who masters that exact craft — the cut, the cloth, the finish. Chosen for skill, never convenience. It shows in how it's made, and in how long it lasts.
Sharp, never stiff.
The ease of your softest loungewear, with the line of real tailoring. The kind of comfort you stop noticing — on a silhouette that still reads refined.
Product design, not fashion.
From our Dutch studio we don't reinvent each season. We refine. The same icons, made better every time — the wardrobe you keep, not the trend you replace.
Shipping & Delivery
Shop with confidence. No import duties on your order. Our essentials ship from the UK via Royal Mail, with free shipping on orders from £130 and delivery in 1–2 days if placed before 6:00 PM.
| Region | Carrier | Fee | Delivery |
|---|---|---|---|
| United Kingdom | Royal Mail |
Free from £130 | 1 - 2 days |
| UAE | FedEx | 100 AED | 2 - 5 days |
| US | FedEx | Free from $300 | 2 - 5 days |
| Canada | FedEx | $29 | 2 - 5 days |
| Australia New Zealand |
FedEx | 50 AUD 50 NZD |
2 - 5 days |
| Ireland | FedEx | Free from €150 | 2 - 5 days |
| Netherlands | DHL | Free from €150 | 1 - 2 days |
| Belgium | Bpost | Free from €150 | 1 - 2 days |
| Germany | DHL | Free from €150 | 1 - 3 days |
| France | La Poste | Free from €150 | 2 - 5 days |
| Denmark | PostNord | Free from 1000 DKK | 2 - 5 days |
| Sweden | PostNord | Free from 2500 SEK | 2 - 5 days |
| Norway | FedEx | €25 | 2 - 5 days |
| Austria | DPD | Free from €150 | 2 - 5 days |
| Switzerland | FedEx | 25 CHF | 2 - 5 days |
| Spain | Correos | Free from €150 | 2 - 5 days |
| Italy | Poste Italiane | Free from €150 | 2 - 5 days |
| Portugal | FedEx | Free from €150 | 2 - 5 days |
| Greece | FedEx | Free from €150 | 2 - 5 days |
| Poland | GLS | Free from €150 | 2 - 5 days |
Returns & exchanges
How it's made - Menswear
Endless Comfort - Menswear
Dutch Design
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Washed Cotton Twill
Ouf of stock
Washed Cotton Twill
Ouf of stock
Washed Cotton Twill
Ouf of stock
| EU | US | UK | CM |
| 39 | 6 | 5 | 25.7 |
| 40 | 7 | 6 | 26.4 |
| 41 | 8 | 7 | 27.0 |
| 42 | 9 | 8 | 27.7 |
| 43 | 10 | 9 | 28.3 |
| 44 | 11 | 10 | 28.9 |
| 45 | 12 | 11 | 29.6 |
| 46 | 13 | 12 | 30.2 |
| 47 | 14 | 13 | 30.9 |
How to measure
Let’s find your perfect fit. Place a sheet of paper on the floor against the wall and put your feet (with socks) on it, heels against the wall. Make sure you lean on your feet with full power when measuring. Now you simply draw a line at the end of the biggest foot. Measure the distance with a ruler and find the size that matches it: see size table. Are you in between sizes? In that case, we suggest taking the bigger size.

JC 01 Essence — Size Guide
All measurements in centimetres.
Use a jacket with a similar fit as your reference. Lay it flat and compare the measurements below.
| Size | Shoulder | Sleeve | Chest | Total |
|---|---|---|---|---|
| S | 49 | 63.5 | 57.2 | 68 |
| M | 50.4 | 65 | 59.5 | 69 |
| L | 52 | 66 | 61.9 | 70 |
| XL | 53.2 | 67 | 64.3 | 71 |
| XXL | 54.4 | 68 | 66.7 | 72 |
Measurements are taken flat, from seam to seam.
More measurements
| Size | Waist | Bottom |
|---|---|---|
| S | 56.2 | 56.2 |
| M | 58.5 | 58.5 |
| L | 60.9 | 60.9 |
| XL | 63.3 | 63.3 |
| XXL | 65.7 | 65.7 |
How to measure
Grab your favorite jacket, preferably with a similar fit, and lay it flat on a surface. Use this item as your reference to compare the measurements above.
Shoulder
Measure straight across the back, from one shoulder seam to the other.
Sleeve length
Starting at the shoulder seam, measure down to the end of the sleeve.
Pit to pit / Chest
Measure from one armpit seam to the other, straight across the front.
Total length
Measure from the highest shoulder point straight down to the hem.
Waist
Measure straight across the jacket at the waist point.
Bottom
Measure straight across the bottom hem from side to side.
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Added to shopping bag
| EU | US | UK | CM |
| 39 | 6 | 5 | 25.7 |
| 40 | 7 | 6 | 26.4 |
| 41 | 8 | 7 | 27.0 |
| 42 | 9 | 8 | 27.7 |
| 43 | 10 | 9 | 28.3 |
| 44 | 11 | 10 | 28.9 |
| 45 | 12 | 11 | 29.6 |
| 46 | 13 | 12 | 30.2 |
| 47 | 14 | 13 | 30.9 |
How to measure
Let’s find your perfect fit. Place a sheet of paper on the floor against the wall and put your feet (with socks) on it, heels against the wall. Make sure you lean on your feet with full power when measuring. Now you simply draw a line at the end of the biggest foot. Measure the distance with a ruler and find the size that matches it: see size table. Are you in between sizes? In that case, we suggest taking the bigger size.

JC 01 Essence — Size Guide
All measurements in centimetres.
Use a jacket with a similar fit as your reference. Lay it flat and compare the measurements below.
| Size | Shoulder | Sleeve | Chest | Total |
|---|---|---|---|---|
| S | 49 | 63.5 | 57.2 | 68 |
| M | 50.4 | 65 | 59.5 | 69 |
| L | 52 | 66 | 61.9 | 70 |
| XL | 53.2 | 67 | 64.3 | 71 |
| XXL | 54.4 | 68 | 66.7 | 72 |
Measurements are taken flat, from seam to seam.
More measurements
| Size | Waist | Bottom |
|---|---|---|
| S | 56.2 | 56.2 |
| M | 58.5 | 58.5 |
| L | 60.9 | 60.9 |
| XL | 63.3 | 63.3 |
| XXL | 65.7 | 65.7 |
How to measure
Grab your favorite jacket, preferably with a similar fit, and lay it flat on a surface. Use this item as your reference to compare the measurements above.
Shoulder
Measure straight across the back, from one shoulder seam to the other.
Sleeve length
Starting at the shoulder seam, measure down to the end of the sleeve.
Pit to pit / Chest
Measure from one armpit seam to the other, straight across the front.
Total length
Measure from the highest shoulder point straight down to the hem.
Waist
Measure straight across the jacket at the waist point.
Bottom
Measure straight across the bottom hem from side to side.