Ultra-Cool(TM) 100% polyester mesh. Brilliant Trim reflective edging improves low light visibility. Zipper front closure reinforced with durable webbing. 2" wide high performance reflective material with 3" breathable contrasting color. Left and right chest mic tabs (Note: Size small only has left mic tab). Pockets: Two lower outside cargo pockets with grommets and adjustable flaps, Right chest 2-tier pencil pocket, Left chest radio pocket with flap, and Two inside patch pockets.