Each tract has been specially formatted so you can print it on your own printer using regular, letter-sized, 8.5" x 11" paper§, both sides, for responsible free distribution. Once printed, fold in half 3 times, making sure the picture remains on the outside. These tracts are small enough to fit inside any pocket (about 30% larger than a business card).
To print on both sides using a one-sided printer, simply print the first page on as many pages as you want, then turn them over, and load them into the paper tray again, so that you can print on side two.
§ Some countries use the A4 standard, which is very close to the 8.5" x 11" standard. You can print our tracts on A4 paper, as well, but be sure to click on the "Fit to page" button on your printer, so that it fills the page correctly.