My son used this when he was in junior high school for dojo practice. I believe the usage period was about 3 years, once a week. I think it shows a reasonable amount of wear. Due to my child's growth, he has outgrown it, and I'm reluctantly putting it up for sale. There are some scuffs on the leather, but I think it's still usable. The body (do) is solid, unlike cheap resin bodies. The do strings are included. I think it's suitable for elementary and junior high school students, and it was purchased from Fukuda Budogu in Asaka. It's a Fukuda-made Kasumi-ryu machine-stitched do, and the selling price was about 200,000 yen for the set. The size is as follows: Inside opening of the do: 36.5cm Center height: 34.5cm Maximum height: 37.5cm The tare (skirt) of the set is also for sale. If you have any questions, please comment.