The doctor of rheumatology and osteoporosis, Dr. Diaa Al-Hajj Hussein, urged parents of male and female students to choose the school bag well, coinciding with the return to school tomorrow, Sunday, noting that the proper selection of the bag guarantees the health and safety of its holders; One of the most important specifications is the presence of a padded shoulder strap, provided that the ideal weight of the bag is less than 10% of the student’s weight, and the need for it to contain multiple pockets that distribute the weight, with attention that the bag should not have one shoulder strap, with the need to use bags with wheels.