I originally ordered these in a medium and didn't love them on myself once received as they were way too oversized in person. I contacted Eyebuydirect customer support and was able to exchange for a size small at no additional cost and they are absolutely perfect in size and fit! Regarding the rx, I'm a -7.50 with an astigmatism and I do not have any issues with the prescription received, which was a huge concern given this is my first ever online purchase. I am a little disappointed in the green glare reflected in the lenses though considering I selected the highest quality lens. I have had a great experience overall though and will be returning for all future purchases.