Zhiduo Bao School Backpack for Boys Grades 1-6 Astronaut Children's Lightweight Ergonomic New Model

Manual measurement may have 1-3cm deviation

8D ergonomic spinal protection back pad with multi-dimensional cushioning to evenly distribute weight and reduce pressure on back, shoulders, and waist

3D breathable honeycomb back pad for comfort and ventilation

Slow rebound memory foam back pad for enhanced support and decompression

S-shaped soft shoulder straps with curve design to prevent neck strain

Upgraded balanced chest buckle to reduce movement and impact during activity

Thickened shoulder straps with no-pressure design

Hollow back pad structure to avoid spinal compression

5-point support system for stability and anti-shake

Large multi-compartment storage with main compartment, secondary zipper pocket, magic tape pocket, front zipper pocket, and side zipper pockets for organized storage

Water-repellent fabric using lotus leaf water-repellent principle to protect contents from rain and dirt

Lightweight and durable construction, total weight approx. 550g, comparable to a bottle of milk

High-quality anti-slip and wear-resistant foot nails to prevent abrasion when placed on the ground

360° reflective strips on shoulder straps and backpack body for enhanced night safety and visibility

Custom smooth zipper for easy access

Comfortable handle for carrying or hanging

Adjustable shoulder straps with durable buckles

Fine dense stitching for enhanced durability

Stylish 3-color options with designer color matching

3D cartoon astronaut pattern for child appeal

Scientific decompression system to protect developing children's spines and prevent posture issues such as uneven shoulders and hunchback

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