I also have a 5th-grade child, and this design was the easiest to use after trying out various options. It has a short string at the top, so it won't dangle excessively when hung on a school bag, and it won't touch the floor when hung on the side of a school desk. The 6cm depth makes it easy to put in a cup. ★Size★ Height: 26cm, Width: 19cm, Depth: 6cm These are approximate sizes. ★Shipping★ Shipped via Yu-Packet Post. We have other designs available. #wahanuiLunchBag ↑ They are all listed under this tag. Please take a look. ✼••┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈┈••✼ Handmade, Entrance/Enrollment, School Preparation, Elementary School, Nursery School, Kindergarten, Lunch Box Bag, Cup Bag, With String, Handmade, Lunch Bag, Lunch Bag, Cup Bag, Drawstring Bag, Small Item Bag, Entrance/Enrollment Goods