Perfect Seal Leak-Resistant Bento Box, 1.6 quart, Bone White

This was my second purchase of this box. The first one eventually cracked (the top lid) after a few months. I ended using it for a few weeks despite the crack, and it didn't leak somewhat solid foods like pasta and rice, but I decided not to wait until it did.I really like the flat shape, as it is easy to fit in my messenger bag. The clamps on the side go almost the entire length of the rim, which means you have an additional safeguard in case there's a leak. The rubber vent hole is very tight, although I always pack with the hole at a high position just in case. After probably about 100 uses, it never leaked.The stopper is a great feature. I used to microwave foods with the lid balanced on top, but this would sometimes result in hot water condensing on the lid and dripping off the side on my hands. This one lets pressure escape without opening the lid, so no dripping outside the box. Very convenient.There will eventually be some staining, more with certain foods. I figure this is an inherent problem with any box, so I just consider it normal wear and tear.