Unique smiling face design, insulated onigiri (rice ball) case, for one. It seems like two regular-sized onigiri could fit. I bought this on Amazon along with a case for "bomb onigiri" (large rice balls), but the bomb onigiri size didn't fit, so I'm selling it. It's practically new, as I only opened the zipper to check if the onigiri case would fit. Thank you for looking. Lunch Box Case - Design: Smiling face design - Material: PP (polypropylene) - Type: Insulated onigiri case - Size: For one