Apparently, I didn't pay attention to the sizes. I thought these were bigger, but they are still very nice, nonetheless. I actually quite like the smallest one for use with small things, or singular things. The largest one isn't as big as it looked in the description, but it's a good standard size cutting board. They appear very well made. They come with a silicone pad that's the size of the smallest board, and you just place it underneath the bottom of the board you wanna use, and it stays put. The drip ring around each board collects any juicy runoff. These are supposed to be dishwasher safe, so we did try one in our short cycle, it came out OK, but caused the board to become a little rough to the touch, so I will only be handwashing mine. They also include a small piece of sandpaper, which I assume is for sanding the boards down after they're washed? Not sure. Anyway, regardless of the one issue, they are very nice and, being bamboo, worth the price as they're very well made. They helped me to clean the cruddy old cutting boards outta my kitchen.