Question Author
Thanks one and all... it seems to imply, from your input, a "tailored" package, which all of the pairs I've purchased have been. Well done and very secure. Here in the U.S. I use postal service provided Priority Mail small boxes. They work very well and I've used them exclusively both within the country and worldwide. I guess I would have thought the same type of thing would be available in the U.K.
I've asked the seller but haven't had a reply yet.
The glasses, when packaged properly jno, haven't been a problem... They are a "big ticket" item and need to be safely packaged...