Thank you for viewing. Please take a moment to read my profile before purchasing. This is a set of a 500ml THERMOS water bottle with a Winnie the Pooh design and an insulated case. I used it a few times, but I stopped using it because I wanted a larger size. The outside of the insulated case and the inside lid (?), have small mesh pockets. I put a ballpoint pen in the pocket to give you a sense of the size, but it is not included. Recently, there has been an increase in accidents caused by children carrying water bottles diagonally, and some kindergartens and elementary schools are instructing children to carry water bottles by hand or in a backpack. I think it's convenient to have an insulated case with a handle. Thank you.