Transparency in a flag is new to me. It's surprisingly effective here. Could this be done with just cloth without synthetics by using thinner threads or thread count?

I also love the transparency and am surprised it hasn’t been used more. Granted, it would be very difficult to achieve with natural materials and also be durable. A flag should be able to withstand an ocean voyage exposed to the elements.

I feel what makes it work well here is also that it's not perfectly transparent so you can still see it wave in the wind and make out it's rectangular shape.

I'd definitely take that into consideration for a digital version.

The website mentions silk organza at https://1worldflag.com/flag/. That's where my mind went initially, some kind of sheer silk fabric. I don't know how durable it would be in the elements though.

It's a novel and fun idea! I also wonder how it would be represented correctly as a digital image, could be as an actual png or maybe the white/grey checker pattern from PhotoShop? Realistically probably just with a white background

Not great for t-shirts

The microplastics inherent in synthetics is the point.