OS 01 Essence Desert Taupe Technical Stretch Twill
Frequently bought together.
The OS 01 Essence comes in a mid-weight twill, and the weave is what gives it structure. Substantial enough to hold its shape through a full day of wear, without losing the drape that makes it fall right. Comfortable enough to erase the line between the office and the couch, and sharp enough for either.
Cut like a shirt rather than a jacket, with a relaxed silhouette that layers easily over a tee or a knit.
Pair it with the TP 01 Essence, made from the same fabric, and wear the two tonal or split them up across the rest of the wardrobe.
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.
- The ETQ signature square at the back of the neck.
- Slightly rounded split hem.
- Piece-dyed with reactive dyes for deep, even colour that holds through washing.
- Mid-weight woven twill at 285g/m2.
- Composition: 62% Polyester, 34% Viscose, 4% Elastane.
- Made in Turkey. Designed in the Netherlands.
- Easy care, machine wash inside out at max. 30°C on a gentle cycle.
- From the collections Menswear and Overshirts
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
Product reviews (1)
Choose size
Choose size
Quantity
Choose size
Added to shopping bag
Choose colour
| 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.

OS 01 Essence - Size Guide
All measurements in centimetres.
Use an overshirt with a similar fit as your reference. Lay it flat and compare the measurements below.
| Size | Shoulder | Sleeve | Chest | Total |
|---|---|---|---|---|
| S | 48 | 65 | 56 | 75 |
| M | 50 | 66 | 58 | 76 |
| L | 52 | 66 | 60 | 76 |
| XL | 54 | 67 | 62 | 77 |
Measurements are taken flat, from seam to seam.
How to measure
Grab your favorite overshirt, 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.
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Added to shopping bag
Choose size
| 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.

OS 01 Essence - Size Guide
All measurements in centimetres.
Use an overshirt with a similar fit as your reference. Lay it flat and compare the measurements below.
| Size | Shoulder | Sleeve | Chest | Total |
|---|---|---|---|---|
| S | 48 | 65 | 56 | 75 |
| M | 50 | 66 | 58 | 76 |
| L | 52 | 66 | 60 | 76 |
| XL | 54 | 67 | 62 | 77 |
Measurements are taken flat, from seam to seam.
How to measure
Grab your favorite overshirt, 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.














