Lesson bag with a patchwork design of denim and stripes, with a polka dot lining. - Colors: Denim, stripes, beige - Design: Patchwork design - Interior design: Polka dot lining - Handle material: Denim material - Size: 24cm x 37cm Is the term "lesson bag" outdated? Ten years ago, children used to carry textbooks and stationery to piano or abacus lessons. I've used it a bit, so I washed it.