These Sunglasses got delivered  really fast, 3 days i believe? Anyways the Quality of the sunglasses are very high. Im still careful with my products though, feel lucky to have stuff bought from online.
I don't really use the Tortise one, so i might give it to my Sibling. Not that its bad or anything. If you have a average size head it would fit perfectly fine.
The amount of sun these glasses block is a decent amount. You can still see everything as the usual just a tad darker. They block 400nm UV. These also work as laser protection goggles for 405nm lasers. Dont recommend it for powers greater than 500mW though.

Over all these are a good buy.& I Highly recommend this.