The reason glasses from Zenni are so cheap is because the glasses through Zenni are designed in house and are manufactured in their own state of the art manufacturing facilities and so they manufacturer the glasses themselves and don't have to go through a middle man for their glasses.
And large volume contributes to low overhead which also saves money.
Zenni is not a Chinese company although, Zenni Opticals manufacturing facility and eyewear laboratories are located in Danyang, China.
Zenni Opticals headquarters are located in San Francisco, California.
The headquarters and fulfillment center of Zenni Optical are in the San Francisco Bay Area, more specifically in Marin County, California.
Zenni Opticals manufacturing facility, where the frames and prescription lenses are made, is located in Danyang, China.
Zenni Optical was founded in 2003 by Tibor Laczay and Julia Zhen.
Zenni also has a California warehouse to support West Coast orders and a lab in Obetz, Ohio, who molds lenses for frames.
The reason Zenni is so cheap is because they design the frames in their own state of the art facility, which keeps costs down.
And large volume contributes to low overhead which also saves money.
And rush delivery glasses through Zenni are processed at their Ohio manufacturing facility and delivered within 3 to 5 business days.
They also offer express shipping as an option for regular orders with standard processing times and a delivery window of 5 to 10 days to the U.S., Europe and Israel.