Product Description:

1) The item is a portable helmet strap, which is made of soft nylon material, and allow you to attach your GoPro camera to any vented bike, ski, kayak or similar sports helmet.
Adjustable strap design makes it suitable for most people.

2) 100% brand new and high quality Vented Helmet Strap Mount Adapter. Compatible with GoPro HD HERO /HERO2 /HERO3 Cameras. The strap allows your HERO camera and its quick release housing to attach to the base plate, mounted on your helmet. Durable design, and easy to install and remove.

Product size: 22.5cm(L) x 4.5cm(W) x 1cm(H)
Model: ST-04.
Color: Black.
Material: Soft Nylon.
Size: one size fits all.
The adjustable size of the strap: 10cm-30cm.