human subject research with Vision pro: light seal size suggestions

Hello,

I'm a PhD student working on a research project that uses the Vision Pro for an education-related topic. The participants are teenagers aged 15 to 18, and each will use the device for about 25 minutes max.

From my own experience, the pressure on the forehead and cheekbones can be pretty uncomfortable, and I imagine it could be even worse for teens. I'm looking for suggestions on how to make the experience more comfortable, especially with the light seal.

Here's a quick idea: ”though I'm not sure if it's practical: what if I start with 2-3 of the most common light seal sizes for this age group since buying all 30 isn't really an option? Does that sound like it could work? If so, how do I figure out which sizes to get?

Thanks!