Sign made of Aluminum composite Industrial Grade Materials: Professional Grade Vinyl Graphics with long-lasting over laminate & heavy duty substrates made to withstand the harshest elements. Indoor or Outdoor Use: Made to withstand water rain UV rays Signs have rounded corners: No sharp corners Aluminum composite substrates will not rust. Don't be fooled by cheap imitation plastic signs Made in the USA Industrial Grade Materials: Professional Grade Viny Graphics with long-lasting over laminate & heavy duty substrates made to withstand the harshest elements Indoor or Outdoor Use: Made to withstand water rain UV rays Made in the USA