About ST-139
The ST-139 chest strap is fully adjustable to ...
Features
1. Made of high quality material, durable and light ...
Features
1. The design is elegant and durable
2. Adjustable ...
1. Material: Plastic and nylon
2. The single shoulder strap ...
1. Easy disassembly and assembly, multi-stage adjustable ventilation, insert buckle ...
1. Quick release system, one-second quick installation, can freely switch ...
1. More stable and effective anti-shake when shooting POV videos ...
Features
1. The chest straps have two fixed position, and ...