100% polyester, knitted mesh, 4 oz; Meshfabric in front and back, Opening in the back for safety harness, 5 tear away with velcro; Banded neck, V neck; Shoulder seam with velcro, Side seam with velcro; D-ring; Front closure with velcro; Chest pockets, one with flap and velcro closure and one with pen pockets; Front pockets with flap; Pen pockets; 50 mm wide reflective tape, Reflective tape on shoulders and body