Product Information:

Suitable for Most Smartphone Models (3.5-6.8 inches) on the Market, and Can be Used with Mobile Phone Cases or Waterproof Phone Cases.
This Product can Easily Carry out Hands-free Video Shooting of Almost any Activity.
-The Headband can be Fully Adjusted to Fit all Sizes of Headrests. No Matter how Big your Hat is, This Product is Suitable.