I just received my Tifosi Czar Sunglasses today. They are the cheap ones on TE. I was skeptical, since I have extremely bad migraines and need very, very good sunglasses. These are awesome. They fit well, will not slip with profuse sweating, and I even tried them outside with my migraine. They work! I did not think they would, due to how inexpensive they were and I had never tried the brand before. I am very pleased with my purchase.