1. It fits tightly and does not leak light, and the gravity is evenly distributed, making it easier and more comfortable to wear 2. Soft memory foam pad, soft rubber breathable design, no pressure on the face, long-term wear not tired 3. The knob can be adjusted to the appropriate size, which is easy to adjust 4. Telescopic buckle, installation and removal in one step 5. Head circumference size: 49-68mm 6. Relative distance: adjustable 7. Tilt angle: adjustable 8. Folded size: 270 x 220 x 141mm 9. Unfolded size: 370 x 220 x 141mm 10. Product net weight: 226g
