The lid's diameter is a bit small, so it goes in quite deep, but considering the design and the number of pieces, it seems to fit perfectly, so I think it's fine. Each piece has slight variations in the underglaze, is a little irregular, and has minor discrepancies in height, etc. I suppose they can of course be used as rice bowls, but are they perhaps more in the realm of pottery? The foot rings are bumpy, but it doesn't seem like there are any chips or anything. Of course, they stand firmly. In other words, there are no problems. In short, as I mentioned earlier, please be aware of the bumpy foot rings, and the slight imperfections like yugire (uneven glaze), pinholes, and small ishihaze (stone bursts). Please understand all the details. Rice is fine in the rice bowls, but the lids can be removed and placed upside down to hold side dishes like pickles. As for pickled plums, well, they're fine on top of the rice, haha. Thank you very much! (m(_ _)m)