100% Polyester. Lightweight and breathable mesh structure. Reflective strips (5 cm wide) on the body and shoulder. Front zipper. Features multiple very practical pockets and an ultra-practical radio loop: pocket for a mobile phone or walkie-talkie on the heart side, two flap pockets at the lower part of the garment with double access from the top and the side, pen pockets, and a key holder, transparent chest pocket for ID on the right side. Complies with the EN ISO 20471:2013 standard for categories 1 and 2.