1. Super quality velcro
The velcro is made of full nylon.
Velcro material have different kind:
First, 100% polyester fabric.
Second, 30% nylon and 70% polyester fabric, use 1000 times.
Third, 70% nylon and 30% polyester fabric, use 2000 times.
Fourth, 100% nylon, use 3000 times.
Fifth, 100% nylon A+ use 5000 times.
We use the 100% nylon velcro, you can use at least 3000 times.
2. Metal D ring
The Metal D ring electroplated and weld. Rust-proof and strong enough.