Lightweight, durable stretch fabric with perforated panels and mesh for breathability where you need it. 4-Way Stretch technology allows for better movement in every direction. Iso-Chill technology helps dissipate body heat, making the fabric feel cool to the touch. Adjustable fastening. UA Classic Fit: pre-curved visor and structured front panels that maintain a low-profile shape. Reflective logo. Material: 100% Polyester