10"x14" Plastic NO TRESPASSING SIGNS  -10 Pack Our heavy duty plastic NO TRESPASSING signs are durable, weather resistant, bright and highly visible.  These no trespassing signs are flexible which makes them great for nailing on to trees or posts.  Plastic is a good choice for signs since aluminum is so valuable these days. They come in a package of 10 signs. The signs read:  NO TRESPASSING in large letters