The Cryo-Tags labels measure 1.50 x 0.75". This product features compatibility with laser printers as the labels are heat-resistant and have a stay-flat design. The labels can withstand temperatures from -196C to 100C and can edure boiling water baths, oven temperatures, and autoclaving and freezer temperatures. The Cryo-Tags can also combat most organic solvents and caustic agents. Compatible with most surfaces, like plastics, glass, and metals without cracking, peeling, or degrading.