Made of corrogated plastic, these signs LAST UP TO 6 YEARS...at least that is how long they have been on my property and they still look great! They are flexable to bend to the curve of a tree, post or any other surface...but rigid to withstand wind and even being shot at. When shot, it will not shatter and holes mostly close up again. 11.9 x 13.7 for great visability. FREE SHIPPING!