**Product Specifications:**

**Brand:** Letopo

**Model:** Spinalbag

**Features:**

- Spinalbag upgrade for backpack back panel

- Material: Plastic and zinc alloy

- Spinalbag worn on the body, featuring Spinal Protection and Decompression System 2.0

- Patent for New Ventilated Spinal Protection Backpack: ZL201220422680.2

- Newton Series

**Sales Information:**

- Letopo Newton Series with cumulative sales of over 100,000 units

- Highly praised by Chinese users

**Design and Technology:**

- Letopo's second-generation Decompression Backpack, developed over 6 years

- Ergonomic design based on human body mechanics

- Certified by China National Institute of Standardization for Ergonomic Testing

**Safety and Comfort:**

- Letopo's patented Spinal Protection and Decompression System

- Designed to maintain a safe distance between the backpack and the child's back

- Waterproof and durable materials

**Innovative Features:**

- Six-sided cushioning to absorb pressure

- Adjustable chest and waist straps for weight distribution

- Breathable and shock-absorbing materials

**Additional Features:**

- Multiple compartments for organized storage

- Reflective strips for visibility and safety

- High-quality zippers and buckles for durability

**Recommended Usage:**

- Suitable for children of different age groups and heights

**Appearance Options:**

- Available in sizes for young children, middle children, and older children

Letopo backpacks are designed with a focus on spinal protection, ergonomic comfort, and long-lasting durability, making them an ideal choice for students of all ages.