Provided two pairs of glasses that were not fit for purpose. Went to a different opticians which tested my eyes then checked the Specsavers glasses to determine they were wrong for my eyes. I then bought glasses from this new optician - which are perfect. While Specsavers were willing to take back my glasses within the 100 days to that store I was unable to return to Macclesfield and was denied taking them to the branch near me. As such, I've wasted over £500 on glasses I can't use and had to pay a further £250 for a pair I can use from a different opticians. I strongly recommend to readers not to take advantage of the buy one pair and get one pair free because you may end up with 2 duff pairs. It's not really get one free anyway - by the time you've matched the features of the first set (like tint and anti-scratch).