I was fortunate to be given a pair of SIN vestas (secondhand) absolutely loved them, they were strong (been stood on n sat on by my kids)-I struggle to find the perfect fitted glasses and these were it..once i lost those i knew i HAD to shop for the same type.. im so happy i found these. I love the look and feel of them-smooth, totally illiminates any glare out on the water or just on a bright sunny day. So comfy to wear I forget I'm wearing them. Super happy with my purchase. I also love that SIN eyewear support the great barrier reef too..