? Ergonomic design: Makes the Most Comfortable Shoulder Straps. Easy to Adjust the length and lock firmly. External pocket for drinking bottle and chest strap. School backpack for boys Recommended age: 5-8 years ? Super Lightweight: Reflective material for enhanced nighttime visibility, durable backpack/daypack Perfect for day trips, vacation, travel, day hikes, school, camping, and shopping. The ergonomic School Backpack Primary Education Grades 1-3 ? Air permeable canvas fabric: A cute backpack rain cover will keep your gear safe and dry when caught in wet weather. Large capacity with well-organized structure, Super Spacious and plenty of room for books and other stuff. School supplies for boys ? Adjustable straps & perfect fit: The S-curve dual padded, reinforced, adjustable shoulder straps perfect fit snugly on child's shoulders, this kids backpack will never strain your shoulders or arms. school backpack in the elementary years ? Multi-purpose Backpack: The