As the content specialist for SmartBuyGlasses, I would like to add to Ben's comment regarding the authenticity of our products. We have just recently revamped our authenticity page here https://www.smartbuyglasses.com/c/authenticity?clear-cache=1. You will find details of our products as well as more information regarding our relationship with our suppliers.
I took it to a high street optician who confirmed it. It looks premium though.
My Maui Jims are real. It just took forever to get them.
Hi! I don't know, 'cause I asked for a refund and fortunately I received it after two weeks!