Upper mesh and lower solid polyester material; 4-point breakaway; Two, 1" wide high performance reflective material with 4.5" lime contrast; 4-season adjustability allows for accurate sizing in any weather, even over bulky coats; Convenient left chest mic tab holder; Left chest pencil/pen pocket; Inside large lower patch pocket ; ANSI/ISEA 107 2015 / ANSI/ISEA 107 2020 Type R | Class 2Fabric dye lot variances may occur and meet luminance factor as stated in the standard.;