Smatree&reg; Head Strap/Belt Harness Mount + Aluminum Thumbscrew Mount for Gopro HD Hero4, Hero3+ Hero3 Hero2 Cameras, Adjustable(Black) Smatree Head Strap Mount is Compatible with ALL HERO3+ HERO3, HERO2, and HD HERO Original Cameras One Size Fits All adjustable head strap mount allows for use on head and helmets NOT RECOMMENDED for high-impact sports. Only recommended for non-impact activities Made with Nylon Straps and Polycarbonate buckles Package including: 1 x Smatree Head Strap Mount(black), 1 x Aluminum Thumbscrew