This is the SP Magnetic Flex Mount for Go-Pro Camera [GA0060]
The magnetic SP Gadgets Flex Mount opens up a world of creative shot possibilities by allowing you to attach your GoPro camera to your canopy, harness, sail, clothing, or even any flat or curved metal surface. It includes two flexible discs, each with four magnets. One of the discs has an integrated GoPro-style quick-release mounting clip and can be used to attach your camera directly to metal objects, or to the second disc. The second disc adds a touch fastener strap for attachment to a backpack, harness, or other gear.
Magnetic and Touch Fastener Attachment
GoPro Quick-Release Mounting System
Four High-Strength Magnets per Disc
Safety Leash Loop
Camera Mount Three-prong GoPro interface