https://www.youtube.com/watch?v=1j083e4c6lg
- 磁吸扣
- 可与 Utility Strap 一同使用
https://live.staticflickr.com/65535/55145654747_3525f94e9e_b.jpg
https://live.staticflickr.com/65535/55146929755_13bd8af498_b.jpg
https://live.staticflickr.com/65535/55145654737_90de79b5e9_b.jpg