Sunscreen fabrics, also known as sun-blocking fabrics, are textiles designed specifically to block ultraviolet radiation. Such fabrics often use special materials or treatments to provide additional protection, allowing the wearer to reduce UV damage to the skin when outdoors.

Features of sunscreen fabrics include:

1. UPF value: UPF (ultraviolet protection factor) is a measure of the ability of sunscreen fabrics to block ultraviolet rays. Generally speaking, the higher the UPF value, the stronger the fabric's UV blocking effect. Usually, a UPF value of more than 50 is considered a high blocking level.

2. Woven structure: Some sunscreen fabrics use special weaving methods to form a dense woven mesh structure to increase their ability to block ultraviolet rays.

3. Chemical coating: Some sunscreen fabrics have chemical coatings applied to the surface, which can absorb or reflect ultraviolet rays, thereby improving the overall sunscreen performance of the fabric.

4. Functional fibers: Using synthetic fibers with sunscreen functions, such as polyester fibers that are specially treated and added with sunscreen ingredients, can enhance the sunscreen effect of the fabric.

5. Lightweight and breathable: High-quality sunscreen fabrics not only provide efficient UV protection, but also maintain good breathability and lightness, making them suitable for long-term outdoor wear.

Sunscreen fabrics are widely used in various clothing, outdoor equipment and home textiles, such as sunscreen clothing, sportswear, beach umbrellas, sun hats, etc., providing users with comprehensive UV protection.