Certification: This high-visibility reflective safety shirt fully complies with ANSI/ISEA 107-2020 Class 3 for occupational visibility and safety requirements Material: This safety work shirts are constructed from 100% bird-eye knitted polyester fabric and breathable polyester mesh for moisture management, ensuring enhanced comfort and a modern appearance Hi Vis Design: Equipped with 2-inch silver heat transfer reflective tape stripes for 360-degree visibility in low-light or hazardous conditions, lime with black bottom enhanced color contrast and stain protection, and provides a left chest pocket for easy access Multi Applications: This high visibility shirt suitable for construction personnel, surveyors, measurement technicians, contractors and other safety-critical roles. Also fit for outdoor activities such as cycling, running, and jogging Size Options: The hi vis construction work shirts are available in sizes ranging from Small to 6X-Large. Please consult the size chart for height and weight recommendations, and measure accordingly prior to purchase. The sizes are regular, if you prefer a relaxed fit or between sizes, select one size larger