**Product Specifications:**

1. **Brand:** Nabiis

2. **Weight:** 5.6KG (16-inch model)

3. **Gear Ratios:**

- 16-inch: Suitable for beginners with small power, prioritizing smooth starts

- 20-inch: Balanced for older children with increased power

- Flyover version: For skilled riders, possibly with competitive plans

4. **Brakes:**

- Short grip distance brake handles for easy gripping by children

- Dual V-brakes for precise braking even with less force

5. **Color Options:** Moss Green, Brushed Silver, Cotton Candy, Chameleon

6. **Frame Geometry:** 145mm children's Q-factor to prevent "duck feet" and promote correct riding posture

7. **RC Value:** Specifically designed for children to provide a comfortable riding experience

8. **Tires:** CST thickened anti-slip tires for stability on various road surfaces

9. **Seat:**

- 16-inch: Thick and comfortable for children

- 20-inch, 24-inch: Adjustable racing seats for growth and performance

10. **Seatpost Clamp:** Quick-release for easy adjustment

11. **Material:**

- Frame: 6061 ultra-light aluminum alloy

- Handlebar: Ultra-light aluminum alloy

- Rims: Double-layer aluminum alloy

- Tires: CST

12. **Sizes:** 16-inch, 20-inch, 24-inch

13. **Models:** S2, S4, S6

14. **Suitable Height:** 100-165cm

15. **Age Range:** 4-15 years old

16. **Weight Capacity:** 5.6kg, 7kg, 8.2kg

17. **Specialty:** Designed for outdoor children's cycling, focusing on lightweight design and growth mindset development through the "Kinetic Exploration 5D System" by Nabiis.