Really works well! I’ve used Velcro attachments as described on YouTube ( it took about five minutes…) and attached a thick foam piece to the back to make a tighter fit against the headset as well. I can’t say enough about how much better this makes the 5K both in fit & comfort but also cementing the sweet spot so it doesn’t slip from view. I’ve had a. Nice dialog with Amazon Pimax Support & am assured that a newly designed head-strap will be released in about two months…until then this conversion works just fine!!