1. strap fixed
2.500D composite nylon hemming
3. Shoulder width Velcro adjustment
4. Velcro adjustable shoulder straps
5. Elastic elastic arm strap
6. Material
Nail: 304 stainless steel
Hemming: 500D composite

Notice:
The nail can be wiped and maintained with lubricating oil.
Each layer on the back has knots, please do not untie it.