Based on this product's specifications, here are some alternatives and similar models
Backpack Cool Pack BAGPACK PICK Gradient Grey by cool pack — school backpack, single-compartment design, padded shoulder straps
Summary description:
The Cool Pack BAGPACK PICK Gradient Grey is a school backpack designed for everyday use. It features a single-compartment layout with practical organization, padded shoulder straps for comfort and a reinforced back panel for support. Suitable for carrying books, notebooks and small personal items for students and daily commuters.