M&G Primary School Backpack Lightweight Ergonomic Children's Shoulder Bag for Grades 4-6 Small Square

Product Specifications

Brand: M&G

Product Series: Sanhao School Backpack Series

Technology & Design:

Lightweight spinal protection technology combining light materials and lightweight structure for scientific spinal care.

Bionic curve design inspired by Cyprus swallowtail butterfly for balanced shoulder, waist, and back force distribution.

Four-layer back padding: sandwich mesh breathable layer, high resilience sponge support layer, thickened non-woven reinforcement layer, water-repellent fabric layer.

Five-point back support system with widened shoulder straps, anti-slip chest buckle, butterfly wing dynamic fitting curve, high-density sponge, rigid support to prevent sagging.

3D airflow breathable back pad for enhanced ventilation and comfort.

ICAS authoritative testing confirms effective pressure reduction by 51%.

Weight & Capacity:

Backpack weight ranges from approximately 525g to 685g depending on model.

Available capacities: 17L, 18L, 20L, 22L.

Example weights: Small size ~635g (equivalent to 2 cups of milk tea), Large size ~660g.

Materials:

Main fabric: Class A standard fabric, durable and water-repellent.

Lining: 99% antibacterial lining effective against E. coli and Staphylococcus aureus.

Zippers: SBS water-repellent base fabric zippers.

All materials comply with safety standards for student products, free from harmful substances such as phthalates, formaldehyde, azo dyes, and heavy metals.

Sizes & Dimensions:

Small size (recommended for height under 135cm, grades 1-3): 270 x 170 x 360 mm, 18L capacity, 635g.

Large size (recommended for height above 135cm, grades 4-6): 295 x 190 x 390 mm, 20L capacity, 660g.

Measurement tolerance: ±2 cm.

Color Options:

Dream Purple, Dark Green, Navy Blue, Pomegranate Red, Classic Black.

Features:

Multi-compartment design with main compartment, front pocket, side pockets, and stationery storage bag.

Water-repellent and stain-resistant fabric.

Ergonomic design to maintain upright balance and reduce shoulder pressure.

Adjustable shoulder straps and chest buckle for secure fit.

Suitable for long-term use with large capacity to accommodate growing needs.

Usage & Care Instructions:

Hand wash recommended, maximum washing temperature 40°C.

Avoid dry cleaning, machine washing, or soaking.

Use neutral or mildly alkaline detergents for stubborn stains; avoid bleach and alcohol-based cleaners.

Avoid heavy pressure and sharp object abrasion.

Air dry in shade; avoid high temperature exposure and ironing.

Additional Notes:

Weight measured manually; slight deviations possible.

Pressure reduction calculated comparing traditional backpacks and M&G lightweight spinal protection backpacks.

Designed for primary school students with focus on comfort, durability, and health.