Based on this product's specifications, here are some alternatives and similar models
Children's School Backpack Lean model 22045 — turquoise quilted unicorn, 32 cm
Summary description:
Children's school backpack by Lean, model 22045, turquoise quilted design with a unicorn motif, 32 cm height. Designed for young pupils to carry school supplies and small books; features a compact rectangular shape and lightweight construction. Suitable for daily school use, kindergartens and short outings where a small, easy-to-carry pack is needed.