I had a really bad experience with a pair of white out lenses I bought from Foureyez. I've used lenses for years and I know how to prepare and use them. After 2 hours, I noticed my lenses felt dry. I ended up in hospital because they had stuck to both of my eyes. The next few days were pure pain, I was told I was lucky to have not got ulcers and lost my vision. Buy with caution over the internet - the quality isn't as regulated as it is in the big high-street stores - and this company does not provide quality. Your vision is too important and I nearly lost mine because of a cheap, unsafe product!