Based on this product's specifications, here are some alternatives and similar models
School Backpack Lean 21L with Unicorn Print, Chest Strap, Pastel Pink, 39 cm
Summary description:
Compact school backpack by Lean designed for daily use; capacity 21 liters and height 39 cm. Features a unicorn print, adjustable shoulder straps and a chest (sternum) strap for better weight distribution. Suitable for carrying books, notebooks and small accessories; practical for primary and middle school students needing a lightweight everyday school bag.