The Expandable Two-Toned safety vest can add up to two sizes with adjustable plastic side snaps. This Class 2 vest is perfect for sweaters or fitting over jackets. There is a 360", 3M Scotchlite reflective tape with ANSI compliant trim and a durable dielectric 100% non-metallic zipper. There is a large pocket on the inside for storage with hook and loop closures that make this hi visibility safety vest easier to put on and remove.