I purchased these to portion out the finished umeboshi (pickled plums), but ended up never using them and they've been stored in the closet. Size 1 (approx. 18.5cm x 15cm) I think it's a convenient size. I plan to wrap them in bubble wrap and then store them in a box for shipping. Although they are new and unused, please be aware that they have been stored for a long time. Thank you.