1. Material: PU 2. Size: 31 x 21 x 9cm 3. Power supply mode: button battery (included in the product) 4. The taillights are waterproof 5. Front narrow round transition design 6. Safety warning taillights, more eye-catching when there are lights at night 7. The bottom shock-absorbing ball design has strong shock absorption effect and is not easy to break 8. Soft bomb design, cushioning and shock absorption, no pain during riding 9. Super-fiber leather on the surface, soft and high-elastic, wear-resistant, dirty and scratch-resistant, full of 3D stereoscopic effect