Reflectors for back of Electric wheel chairs where can i get them?

I just got a Electric Wheel Chair is there a place i can get reflector for the back of the chair something like the state Highway uses but smaller i got a JAZZY from scooter Store Thanks for any help

ANY HARDWARE STORE THAT SELLS MAIL BOXES WILL HAVE THEM.LOWES HAS SOME WITH A STRONG STICKY TAPE ON IT.IVE HAD THEM ON MY CAR PORT FOR YEARS.