After reading the reviews for this product, I felt like giving them a go because the reviews seems positive and if I didn't like them, they were only a fiver anyway. I was quite impressed with the overall look of the glasses, you wouldn't be able tot ell they are very cheap just by looking at them. The quality of the product is... average. It's very cheaply put together and mostly (if not entirely) made of plastic.
If you do buy these glasses, be very careful with them! I have gone through three pairs in about four weeks because they keep breaking! Either the nose grips keep snap off or the plastic bit on the end of the nose grip falls off. But overall not a bad product, just be careful!