The GoPro camera can be placed in a water-proof protection, but the selfie bar? This resists water and below still buoy! Perfect for beach and pool. See also This link other products and accessories for GoPro.
Comes with the yellow ball, easy to find-over of your hand, and a traditional screw GoPro support.
There is the ball stuck in my Hero 3.
I like the product. The screw holds very well and seems more suited to the pool than the traditional selfie bar. I leave below link to the product:
http://www.dx.com/p/the-bobber-floating-handheld-stick-w-wristband-for-gopro-1-2-3-yellow-228654