Reflective Safety Vests For The Whole Family. Manufactured out of high quality woven Yellow polyester with adjustable Velcro front closures. Ideal for keeping the active family safe during outdoor activities. These patented safety vests meet the American National Standards Institute for Class 2 visibility, just like the pro's wear. Set contains 4 adjustable adult safety vests M-2XL (fits up to 50") and 2 adjustable childrens safety vests. Comes with two storage bags that fold flat. It is recommended that these bags be stored within the car within storage compartments, or under the front seats. For optimal safey, the vests should be put on prior to leaving the car while on the roadside.