1. Anti-oxidation rubber band, long use does not break
2. Double silicone anti-slip strips, fixed body position, prevent movement
3. Overlapping splicing, durable, anti-detachment
4. 8cm wide webbing, not easy to roll the edge
5. Fine fabric, uniform force, not wear legs
6. Material: nylon, silicone
7. Size: S / M
8. Perimeter: S about 64cm, M about 74cm
9. Width: about 8cm
10. Weight: S about 67.2g, M about 76.2g