**Product Specifications:**
**Brand:** M&G
**Product Name:** Urban Theme School Bag from M&G
**Series:** City British Style
**Features:** Lightweight, durable, suitable for both boys and girls
**Size Options:**
- **Size M:** 280x170x360mm, 17L, 525g, suitable for children under 135cm
- **Size L:** 290x170x390mm, 20L, 585g, suitable for children above 135cm
**Innovative Design:**
- Ultra-lightweight production process, whole bag weighs only about 525g
**Spinal Protection:**
- Various models available with different weights ranging from 600g to 900g
**Advanced Features:**
- Six-dimensional anti-sagging system
- Wide shoulder straps for even weight distribution
- Chest buckle and anti-slip design for stability
- Breathable high-density sponge with good resilience
**Material:**
- CB-A Grade 3-layer back pad with 18mm thickness
- EVA foam technology for dust-proof and breathable properties
**Adjustable Design:**
- Thickened S-shaped shoulder straps with pearl cotton padding
- Adjustable strap length and chest buckle for a customized fit
**Safety Features:**
- 360-degree reflective strips for visibility in low light conditions
**Additional Details:**
- 20L large capacity with scientific compartmentalization
- Expandable side pockets for water bottles or umbrellas
**Cleaning Instructions:**
- Hand wash with water below 40°C, avoid bleach or alcohol
- Hang to dry in a cool place, avoid high temperatures and ironing
**Note:** Product specifications may vary slightly due to manual measurement. For accurate dimensions, please refer to the actual product.