√-16 eyewear is hand made in Northern Italy using the finest Italian sourced sustainable Mazzucchelli acetate.

Owned and designed by

Red Kakar & Diana Lopez Kakar,

√-16 is a truly family owned company.

Headquarters based in

Marin County, California.

Established in 2021

√-16 , is a mathiatical method that equals (4i) a method created by Leonhard Euler