As a skier I’m use to wearing goggles over my glasses because without them I can’t see. Cocoons offer the same concept for prescription glass wearers. So when it came to testing them I was the guinea pig since I’m the KFM staffer with glasses. Chris sent me the sizing guide and I printed it out. It’s simple to use. You place your prescription glasses on the printed page and if it fits in the outline the Cocoon will work with your glasses. I selected a style and when I returned from the Harrisburg Sportsman Show they were here. They come with a soft case and a cloth. I was relieved that they weren’t big like glaucoma glasses. They work very well and I find them convenient. Its winter here so I’ve only used them driving but I like them. Another great feature is they come in a wide array of lens colors for a myriad of situations and there are lots of styles. So if you need sunglasses and you wear prescription glasses take a look at Cocoons. They work and make sense.  www.cocoonseyewear.com/