Dijiuchengbao Schoolbag for Primary School Boys, Spine-Protecting Children's Backpack for Grades 1-3

**Product Specifications:**

**Brand:** The Ninth Castle

**Color Options:** Multiple colors available, rich in variety

**Usage:** Designed for children to carry school supplies

**Features:**

- Next-generation ergonomic backpack

- Upgraded 3D ergonomic back cushion for multiple support points to prevent slippage

- Airflow design for ventilation and sweat prevention

- Anti-slip chest buckle for stability

- Weight-bearing bottom plate for balance and posture support

- Customized antibacterial lining to inhibit bacterial growth

- Spacious and well-organized compartments for easy storage

- 360° reflective strips for safety

- Water-resistant and durable A-class fabric

**Patents:** 6 patented ergonomic features for comfort and stability

**Certifications:** Meets Category A fabric standards for safety and antibacterial properties

**Capacity Options:**

- 18L: Suitable for ages 6-9 (height 100-130cm)

- 24L: Suitable for ages 9-13 (height 120-160cm)

**Size Recommendations:** Refer to A4 exercise book dimensions for accurate sizing

**Design Options:** Available in Cambridge Blue, Cambridge Powder, and Cambridge Green

**Additional Features:**

- Wide and thick shoulder straps for comfort and pressure relief

- Silicone handle for durability and comfort

- Reinforced bottom with anti-friction design

**Safety:** Backpack weight should not exceed 10% of the child's body weight

**Antibacterial Properties:** Certified to inhibit growth of Staphylococcus aureus and Escherichia coli

**Testing Results:** Meets national textile safety standards for antibacterial effectiveness

**Note:** Measurements may have a 0-3cm deviation due to manual measurement

**Disclaimer:** The above specifications are based on the provided information and are subject to change based on actual product design and manufacturing.