google cardboard,vr headsets 3d box virtual reality glasses with big clear 3d optical lens and comfortable head strap for all 3-6 inch smartphones (yellow, 1 pack) yincaicheng amazing revolutionary tech, turn your smartphone into a virtual reality viewer.<br> you can experience the immersive, fun and exciting world of vr.<br> we all know that once you are actively using a vr headset you always want it with you.<br> although its small,it fits various brand models small or large size mobile phones which between 3.5-6.0.