The volume can be adjusted to the KK04

Bentgo Kids Lunch Bag - Durable, Double-Insulated Lunch Bag for Kids 3+; Holds Lunch Box, Water Bottle, & Snacks; Easy-Clean Water-Resistant Fabric & Multiple Zippered Pockets (Dino Fossils)

Bentgo Kids Prints Leak-Proof, 5-Compartment Bento-Style Kids Lunch Box - Ideal Portion Sizes for Ages 3-7, Durable, Drop-Proof, Dishwasher Safe, & Made with BPA-Free Materials (Dino Fossils)

Bentgo Kids Water Bottle 2-Pack - Leak-Proof, Durable Tritan, BPA-Free 15 oz. Cup for Kids/Toddlers Ages 3+, Safe Sip Spout, & Dishwasher Safe for School/Sports/Daycare/Camp (Dinosaur/Dino Fossils)