Ключевые слова: accessories, advice, back, backpack, backpacks, balance, carry, children, classrooms, colors, comfort, design, education, ergonomic, essentials, features, guidelines, health, instruction, loading, maintenance, materials, organization, outdoor, pain, performance, posture, prevention, reduction, risks, safety, school, storage, straps, students, styles, support, tips, travel, types, usage, weight, wellbeing,