This is a clear file. The surface is not smooth (it's slightly rough). As you can see in the photo, it's made of a material that bends, unusual for a clear file. You might think of it as a "hiragana chart that won't tear even when taken in and out" to put in a bag for study materials. The front has a hiragana chart, and the back has voiced sounds (dakuten) and contracted sounds (yōon). The most important thing is to look at the basics often and get used to them. It's also convenient to get used to the sounds in the rows, such as the 'a' row and the 'i' row. For children who struggle with contracted sounds, it's also good to check them off by putting stickers on the ones they get right. ★Brand new, unused item. No individual discounts on this item. We recommend a combined discount. Please take a look here: ↓ #KUMON related, children's fun collection