Sunscreen fabric, also known as sunshade fabric or sun-blocking fabric, is a type of material specifically designed to provide protection from the sun's harmful ultraviolet (UV) rays while allowing some level of visibility and airflow. It is commonly used in various applications where shade and UV protection are desired, such as outdoor furniture, awnings, canopies, pergolas, carports, and more.

Here are a few key points about sunscreen fabric:

1. UV Protection: Sunscreen fabrics are designed to block or minimize the penetration of UV radiation through the material. This helps to protect the skin from sunburn, premature aging, and potential long-term damage caused by UV exposure.

2. UPF Rating: The UPF rating measures the amount of UV radiation that is allowed to pass through the fabric. For example, a fabric with a UPF rating of 50 allows only 1/50th (or 2%) of UV radiation to penetrate, providing high sun protection.

3. Breathability: While sunscreen fabrics are effective at blocking UV rays, they can vary in terms of breathability. Some fabrics may allow for better air circulation, which can help keep the wearer cool and comfortable in hot weather conditions.

4. Applications: Sunscreen fabrics are commonly used in the manufacturing of clothing and accessories such as hats, shirts, pants, swimwear, and outdoor gear. They are particularly popular for outdoor activities like hiking, swimming, and sports where sun exposure is a concern.

When selecting sunscreen fabric, it's important to consider factors such as the level of UV protection needed, the intended application, the material's durability, and the overall aesthetic. Additionally, it's crucial to properly install and maintain the fabric to ensure its longevity and continued effectiveness in providing shade and UV protection.