In addition to the primary fabric of 220G high-density pure cotton, this T-shirt features two additional high-density breathable and waterproof functional spliced fabrics. This design not only significantly enhances breathability but also greatly improves the layered appearance and practicality of the 3D pockets. The pockets include a functional retractable system and Velcro design, providing convenient storage for items of various sizes and catering to your outdoor work requirements.