These glasses are designed to look like those that Kamina wears in the anime Tengen Toppa Gurren Lagann. They are perfect for cosplay or just to impress your friends.
Currently, there is no frame or strap to hold them to your face. The buyer will need to devise their own way to do this. Only the actual cutout is supplied. Feel free edit it as desired to make your own method work, or just to your taste.
The file here is a cutting template to cut a batch of 15. This is the best value I have found. I recommend doing a group buy to keep the price reasonable. They should be cut from 0.118" thick red tint acrylic in the P3 size.