Our item OL158AT has a shelf life of 1-3 years, depending on environmental and storage conditions, such as heat and humidity. We recommend keeping the label sheets in the plastic clam shell in which they are shipped, in a climate controlled room with low humidity. If you would like to test whether or not this item will work for you, you are welcome to use the link provided below to request free blank sample sheets. https://www.onlinelabels.com/samples