School backpack icon. Kids rucksack, knapsack isolated on white background. Bag with supplies, ruler, pencil, paper. Pupil satchel. Children education, back to school concept. Vector flat illustration Shutterstock .eps vector - School backpack icon. Kids rucksack, knapsack isolated on white background. Bag with supplies, ruler, pencil, paper. Pupil satchel. Children education, back to school concept. Vector flat illustration - ID: 684967714