This replacement head strap is designed for use with Nightfox's Swift 2 Pro and Prowl night vision devices, but is also compatible with GoPro devices. The head strap is also compatible with older Nightfox devices such as the Swift 1, Red and Cape. We've designed the head strap to be supportive, comfortable and fully adjustable. There is padding on the forehead plate, which makes the strap particularly comfortable for heavier devices. Made with high quality polycarbonate plastic for strength and resilience.