Inkjet Teslin Paper is specifically designed for use with inkjet printers. It is not recommended for Laser printers (Laser Teslin is also available). Teslin is a water proof printable plastic material and is ideal for use anytime you need to ensure your printed documents are safe from the elements. It is also puncture and tear resistant. The primarily application is for use in making ID cards. You can also use it for printing topographical maps and directions for hiking trips, for outdoor signage, event tickets, permits, underwater tags, garden labels, menus, luggage tags, and many others. This 25-Pack is enough to make 200 credit card size IDs (8 ID cards per sheet of paper). All Inkjet Teslin on the market today is double sided, meaning you will get the same quality of print no matter which side you print on. (Single-sided Inkjet Teslin has not been sold for many years.) The thickness of this Teslin is 10 mil (0.01"/0.254mm), which is the standard thickness for this type of paper. Butterfly pouches are recommended for laminating Teslin in order to form a borderless ID Card. Other laminate pouches can be used if you don't mind have a laminate border on one edge of your cards. Inkjet Teslin is also sold as National Geographic Adventure Paper.