My siblings used these when they were in kindergarten. My younger sister is small and my older brother is quite big, but they are two years apart and used them perfectly. If your child is small, they might be able to use them in the lower grades of elementary school. I am selling them at a low price, so please understand that there may be some fading or stains, and I would like to ask for no returns. The red backpack has a faint mark where my name was written in magic marker on the clear vinyl part (see photo 5). My child wrote it themselves. I tried to erase it with alcohol, but it's still slightly visible. The green one has no name written on it, but the side pocket is stretched. Please check the photos. I am moving and will be getting rid of these, so I will be disposing of them by the end of this week. I apologize if I have to delete the listing suddenly ( ; ; )