Cambridge Tree School Backpack for Primary Students Grades 1-3, Child Lightweight Spine Protection Anti-Drop Large Capacity Bag Mini Coco Small Size

Tested by Chinese Academy of Sciences for pressure distribution in standing, walking, and running states

S-shaped thickened shoulder straps with chest buckle adjustment system

Balanced pressure distribution with 3D support structure and fixed straps to stabilize center of gravity and prevent downward slipping

Cloud shield cushioning for shock absorption and impact protection

High-density water-repellent treatment to protect books from light rain

Large opening design for quick and easy access with one hand

Multiple compartments and pockets for organized storage and easy access

Reflective strips for night safety

Comfortable sponge texture for shoulder straps

Rainwater easily shakes off to keep contents dry

Endorsed by many parents for high aesthetics, large capacity, and functional design

Chinese Utility Model Patent CN202120495728.1

Designed for ergonomic spinal protection and comprehensive load reduction

Adjustable back length does not exceed shoulder blade line (C7 vertebra)

Waist belt centerline aligns with top of hip bone for optimal support

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