The Fluorescent Orange (FO) features a facestock that is 4.2 +/- 10% mil in thickness and a 35# liner that is 2.5 +/- 10% mil thick. You can also view the material details on the product page once the material is selected. Smearing or smudging can occur with both inkjet and laser printers. This can generally be resolved by adjusting the material type setting within your printer options. For inkjet printers, try adjusting the material setting to a Photo or Glossy setting. For laser printers, adjusting to a heavier option like Labels or Cardstock should dramatically improve the toner adhesion. If you'd like to try samples of this material, you're welcome to visit the link below. https://www.onlinelabels.com/samples