Tri-blend yarn refers to a type of yarn that is made by blending three different fibers. The goal is to create a material that combines the best qualities of each individual fiber, resulting in a fabric that is soft, lightweight, durable, and comfortable. The most common tri-blend yarn consists of polyester, cotton, and rayon/viscose, although other combinations exist as well.

Polyester provides durability, wrinkle resistance, and quick-drying properties; cotton adds breathability, softness, and natural moisture absorption; and rayon contributes to the fabric’s overall softness and drapability.

Tri-blend fabrics are popular for making casual wear, such as t-shirts, due to their comfortable feel and ability to maintain their shape and color even after multiple washes.