Google Cardboard V2.0,[U.S. Warranty]JoyGeek VR Headset 3D Glasses Virtual Reality Glasses with NFC Tag and Head-strap for 3-6 inch iPhone and Android Smartphones(Yellow) (Wireless Phone Accessory)

This is an interesting product here. It has easy to follow directions. I love these 3D glasses it makes looking videos on your phone a lot easier. All you have to do is set your phone behind the 3D glasses part and you are ready to watch anything that you would like to on your phone. There is a strap for you to apply to these 3D glasses which makes it easy to stay on your face.
I got these for free, I was in no way compensated for my honest opinion.