Approximately 25 x 20 x 10 cm This 2-way bag can be used in two ways depending on how you use the attached string (handle): as a "shoulder type" bag or as a "rucksack type" bag worn on the back. I think adults can also use it. Recycled packaging materials may be used. Thank you for your understanding. It will be shipped compressed, so please be aware of creases. Thank you.