Breathable fabric refers to materials that allow air to circulate freely through them, making them comfortable to wear in warm or humid conditions. These fabrics are typically lightweight, moisture-wicking, and quick-drying, making them ideal for athletic or outdoor activities.

Some common examples of breathable fabrics include:

1. Cotton: Cotton is a natural fiber that is soft, comfortable, and breathable. It is absorbent and allows air to circulate, making it ideal for hot and humid conditions.
2. Linen: Linen is a lightweight, natural fabric that is highly breathable and absorbent. It is often used in warm weather clothing, such as shirts and dresses.
3. Rayon: Rayon is a synthetic fabric that is lightweight and breathable. It has a similar feel to cotton but is more moisture-wicking, making it ideal for athletic wear.
4. Nylon: Nylon is a synthetic fabric that is lightweight, durable, and moisture-wicking. It is often used in activewear and outdoor gear.
5. Polyester: Polyester is a synthetic fabric that is lightweight, durable, and moisture-wicking. It is often used in athletic wear and outdoor gear.

Overall, breathable fabrics help to keep the body cool and comfortable in warm weather, making them a popular choice for a variety of clothing and outdoor activities.