What's a pantiliner? You've probably seen that there are pads of all shapes and sizes — even some with "wings"! In general, you choose a pad based on how much menstrual flow you're having. Pantiliners are the smallest and thinnest. They would be OK to wear on a day that you had very light flow. Some girls wear pantiliners around the time they expect to get their period so they don't stain their clothing when it comes. See more Personal Questions Back to Articles Related Articles Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor. © 1995-2021 KidsHealth®. All rights reserved. Images provided by The Nemours Foundation, iStock, Getty Images, Veer, Shutterstock, and Clipart.com.