The Occulux expandable vest can grow up to two sizes with adjustable plastic side snaps, quickly and comfortably accommodate your changing outerwear needs. Whether worn over a t-shirt, sweater or large winter coat, this 3 sizes in 1 vest will protect workers all year long and employers can save on supplying varying sized vests. Zipper closure is durable, dielectric, black and 100 percent non-metallic for added safety. This design boasts contrasting Orange striping for superior daytime conspicuity, in addition to powerful nighttime reflective visibility. Unlike most other two-tone vests, our orange trim is ANSI compliant. Two large pockets- one large inside pocket with secure hook and loop closure plus one large convenient, easy access outer pocket. Breathable yellow Polyester fabric and includes 2 inch 3M Scotchlite reflective tape with bright orange trim. One 360 degree horizontal reflective stripe plus two vertical shoulder stripes.