---
type: "fabric"
name: "Covert Cloth"
slug: "covert-cloth"
fabric_family: "woven"
construction: "twill"
typical_fibers:
  - "Wool"
weight_gsm: "300–450 g/m²"
price_tier: 3
url: "https://www.fabricatlas.com/fabrics/covert-cloth"
updated: "2025-09-08T02:05:57.788386+00:00"
---

# Covert Cloth

Covert cloth is a durable, twill-woven fabric traditionally made from wool, known for its unique diagonal ribbing and versatility in outerwear and trousers.

- **Fabric Family**: Woven
- **Construction**: Twill
- **Typical Fibers**: Wool
- **Weight**: 300–450 g/m²
- **Thickness**: 0.8–1.2 mm
- **Typical Width**: 150 cm
- **Price Tier**: $$$ (3 of 5)

## About Covert Cloth

Covert cloth features a distinctive twill weave that provides a robust structure with a subtle diagonal pattern. Typically made from wool, this fabric is prized for its warmth, durability, and resistance to creasing, making it an excellent choice for tailored garments such as coats and trousers. Its natural fibers offer breathability and moisture-wicking properties, while the twill construction enhances its drape and texture.

## Woven Properties

- **Ends per Inch (EPI)**: 50
- **Picks per Inch (PPI)**: 40

## Stretch Properties

- **Warp Stretch**: 0%
- **Weft Stretch**: 0%

## Performance Properties

- **Air Permeability**: 5 CFM
- **Hydrostatic Head**: 200 mm
- **Spray Rating**: 5
- **Evaporative Resistance (Ret)**: 10
- **Thermal Resistance (Rct)**: 0.15
- **UPF Rating**: 15

## Appearance & Hand

- **Luster**: Semi Matte
- **Opacity**: Opaque
- **Surface Texture**: smooth
- **Hand & Drape**: Balanced

## Performance Features

- Moisture Wicking
- Stain Resistant

## Common Finishes

- Water Repellent Treatment
- Anti Wrinkle Finish

## Common Applications

- Trousers
- Jackets
- Coats
- Uniforms
- Outerwear

## Common Uses in Detail

### Outerwear & Coats

Its tightly woven [Twill](https://www.fabricatlas.com/fabrics/twill) structure and durable [Wool](https://www.fabricatlas.com/fibers/wool) fibers make it an ideal choice for overcoats and jackets. The fabric resists wind and light moisture while maintaining a refined appearance, keeping the wearer warm and well-dressed in cooler climates.

### Tailored Trousers

The firm yet comfortable hand of this [Wool](https://www.fabricatlas.com/fibers/wool) [Twill](https://www.fabricatlas.com/fabrics/twill) lends itself naturally to structured trousers and uniform bottoms. Its diagonal ribbing holds a crisp crease beautifully, while its hard-wearing nature ensures the garment retains its shape through extended daily wear.

## Care Instructions

Gentle machine wash recommended; iron on medium heat; avoid bleach and tumble drying to maintain fabric integrity.

- Washing: 30°C
- Ironing: Medium
- Do Not Bleach
- Do Not Tumble Dry

## Additional Information

Covert cloth is often used in military and workwear due to its durability and protective qualities. It is also favored in tailored fashion for its classic appearance.

- **Regional Names**: Covert, Twill Wool
- **Sourcing Regions**: Italy, UK, China
- **Testing Standards**: Martindale/Rub count, Pilling, Colorfastness to wash, Seam slippage, Tear strength

## Fibers in This Fabric

- [Wool](https://www.fabricatlas.com/fibers/wool.md)

## Similar Fabrics

- [Bedford Cord](https://www.fabricatlas.com/fabrics/bedford-cord.md) — Woven
- [Birdseye](https://www.fabricatlas.com/fabrics/birdseye.md) — Woven
- [Boutis](https://www.fabricatlas.com/fabrics/boutis.md) — Woven
- [Cavalry Twill](https://www.fabricatlas.com/fabrics/cavalry-twill.md) — Woven
- [Cheviot](https://www.fabricatlas.com/fabrics/cheviot.md) — Woven

---
*Source: [Fabric Atlas](https://www.fabricatlas.com/fabrics/covert-cloth) — HTML version of this page.*