Amazon : Listings for the "Official Google Cardboard" often appear from third-party resellers.
Since Google open-sourced the platform, they provide the for free. If you have a pizza box and some basic supplies, you can make one yourself: google cardboard official buy
One of the original primary partners still producing Cardboard-compatible viewers. Amazon : Listings for the "Official Google Cardboard"
Accessible via Google for Developers . Needed Parts: Corrugated cardboard Lenses (40mm focal distance) Two magnets (to act as buttons) Velcro strips and a rubber band 📱 Compatibility & Requirements google cardboard official buy