There are lots of better headsets that are cheaper. My current favorite is the Leji VR Mini, that has a much simpler mechanism for holding a phone, is much smaller and lighter, has adjustable lenses, plenty of room for both audio and power cords, has headstraps, and comes in several colors.

You could also get a Google Tech C1-Glass foldable headset for $22, or a VR Fold for less than $5 (on Amazon) or a Baofeng Mojing Small for $12 on AliExpress. All are open-sided, fold flat to fit in a pocket. And for something even smaller, try the Homido Mini on Amazon for around $15.