I wanted some inexspensive sunglasses to use for fishing . I saw these listed and thought I's give them a try . The price was right and I like the look . They came on the day promised , they were as described . As far as shatterproof and unbreakable , who knows . I don't want to test them for that . I live in Florida and the sun is a good enough test and they seem to work fine and they are very lightweight . I'm pleased with my buy and if they last six months I'll be happy and will probably order my next pair from the same company . I think $35 a year for two pair of brand new glasses is well within reason . I would rather have glasses to rotate and keep a new pair all the time . This is a fine buy if you are looking for lightweight , stylish , and affordable sunglasses that work .