---
type: "fabric"
name: "Activewear Interlock"
slug: "activewear-interlock"
fabric_family: "specialty"
construction: "plain"
typical_fibers:
  - "Polyester"
  - "Nylon"
  - "Spandex"
weight_gsm: "180–300 g/m²"
price_tier: 3
url: "https://www.fabricatlas.com/fabrics/activewear-interlock"
updated: "2025-09-08T02:02:10.027846+00:00"
---

# Activewear Interlock

Activewear Interlock is a specialized knit fabric designed for comfort and performance in athletic wear, combining polyester, nylon, and spandex for optimal stretch and moisture management.

- **Fabric Family**: Specialty
- **Construction**: Plain
- **Typical Fibers**: Polyester, Nylon, Spandex
- **Weight**: 180–300 g/m²
- **Thickness**: 0.8–1.5 mm
- **Typical Width**: 150 cm
- **Price Tier**: $$$ (3 of 5)

## About Activewear Interlock

Activewear Interlock is a double-knit fabric that features a smooth surface and a soft hand, making it ideal for activewear applications. The construction allows for excellent stretch and recovery due to the inclusion of spandex, while the polyester and nylon fibers provide durability and moisture-wicking properties. This fabric is commonly used in leggings, sports bras, and other active apparel where comfort and performance are paramount.

## Knit Properties

- **Wales per Inch**: 6
- **Courses per Inch**: 8
- **Knit Gauge**: 24G

## Stretch Properties

- **Warp Stretch**: 30%
- **Weft Stretch**: 40%

## Performance Properties

- **Air Permeability**: 5 CFM
- **Hydrostatic Head**: 3000 mm
- **Spray Rating**: 80
- **Evaporative Resistance (Ret)**: 5
- **Thermal Resistance (Rct)**: 0.2
- **UPF Rating**: 30

## Appearance & Hand

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

## Performance Features

- Stretch
- Wrinkle Resistance
- Breathability

## Common Finishes

- Moisture Wicking
- Antimicrobial
- DWR Durable Water Repellent

## Common Applications

- Leggings
- Sports Bras
- T Shirts
- Active Shorts
- Outerwear

## Common Uses in Detail

### Leggings & Tights

Its four-way stretch and moisture-wicking properties make it ideal for leggings and tights, conforming to the body during high-intensity movement while keeping the wearer dry and comfortable throughout workouts, runs, or yoga sessions.

### Sports Bras

The combination of spandex-driven elasticity and a smooth [Interlock](https://www.fabricatlas.com/fabrics/interlock) construction provides the supportive, compressive fit required for sports bras, ensuring minimal fabric distortion under load while [Nylon](https://www.fabricatlas.com/fibers/nylon) and [Polyester](https://www.fabricatlas.com/fibers/polyester) blends enhance durability and shape retention.

### Active Outerwear

Lightweight yet resilient, this fabric is well suited for athletic jackets and pullovers, offering breathability and stretch for unrestricted movement while [Polyester](https://www.fabricatlas.com/fibers/polyester) content provides resistance to pilling and maintains structure across repeated wear and washing cycles.

## Care Instructions

Machine wash cold with like colors. Do not bleach. Tumble dry low or hang to dry. Iron on low heat if necessary.

- Machine Wash
- Do Not Bleach
- Tumble Dry Low
- Iron Low

## Additional Information

Activewear Interlock is particularly favored for its ability to maintain shape and resist pilling, making it a popular choice among fitness enthusiasts and sportswear brands.

- **Sourcing Regions**: China, Vietnam, Bangladesh
- **Testing Standards**: AATCC 16 (Colorfastness to Light), AATCC 107 (Stain Release), ISO 13934 (Tensile Strength), AATCC 135 (Colorfastness to Crocking)

## Fibers in This Fabric

- [Nylon](https://www.fabricatlas.com/fibers/nylon.md)
- [Polyester](https://www.fabricatlas.com/fibers/polyester.md)

## Similar Fabrics

- [Activewear Jersey](https://www.fabricatlas.com/fabrics/activewear-jersey.md) — Specialty
- [Activewear Tricot](https://www.fabricatlas.com/fabrics/activewear-tricot.md) — Specialty
- [Adire](https://www.fabricatlas.com/fabrics/adire.md) — Specialty
- [Ankara Wax Print](https://www.fabricatlas.com/fabrics/ankara-wax-print.md) — Specialty
- [Appliqué Fabric](https://www.fabricatlas.com/fabrics/applique-fabric.md) — Specialty

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