Lululemon Fast and Free Short Sleeve Shirt in Black features a highly breathable, moisture-wicking construction designed for high-intensity training and running. The body is crafted from 100% recycled polyester with a specialized mesh-like texture, while the back panel incorporates a blend of polyester and Lycra elastane for enhanced stretch and airflow. It includes a classic crew neck, raglan-style sleeve seams for mobility, and a curved hem for extra coverage during movement. Reflective logo detailing is present on the lower back for visibility in low-light conditions.