size: about 8 x 12 inch (20cm x 30cm). material: high quality aluminium made of non-rusting, environmentally friendly and recyclable, can be used indoors and outdoors. convenience and safety: pre-drilled holes can be mounted on the wall by nails on 4 corners or double-sided tape. applicable place: these funny poster tin signs for living room,bedroom,kitchen,office,hotel,dinning room, office,bar,cafe room,restaurant,classroom,guest room,office,bathroom. novelty gift:perfect gift for yourself, mother, father, sisters, brothers, friends, colleagues, neighbors, teachers, doctors, etc.