Merge VR offers a quality and fully functional VR experience without the DIY elements of Cardboard and the eventual price tag of Oculus Rift and Sony PlayStation VR.
With Merge VR, the lenses are already in place and adjusted via knobs at the top and bottom of the headset. When my son and I were testing the device, I constantly had to reset the lenses closer to the center so I could focus. The headset fit nicely over my hipster glasses, though I fear that anyone with larger frames would have trouble fitting any VR headset over them. The only real weight of the headset came from the phone, the light foam construction being both sturdy (we dropped it a couple times) and comfortable.