1. Material: nylon + metal 2. The size is adjustable and comfortable 3. Buckle design, firm and not easy to break free 4. Left and right double adjustable neck strap, convenient and practical 5. Fine workmanship, compact structure, not easy to wear, durable 6. Nickel-plated hook design, wear-resistant, tear-resistant, and break-resistant 7. Size: S: neck circumference 16-28cm, bust circumference 18-32cm, traction rope 1x115cm, M: neck circumference 19-31cm, bust circumference 21-35cm, traction rope 1.5x115cm 8. Unit weight: about 73g for S size, about 80g for M size
