NEW YORK—Brooklyn-based eyewear company, Lowercase, has partnered with another Brooklyn-based company, Knickerbocker Mfg. Co., on a frame collaboration with a charitable component.

Through the partnership, which launched on Nov. 30, Lowercase crafted the RPG (Regulation Prescription Glasses) style which is inspired by the standard issue optical frame for new military recruits that dates back to WWII. While there have been variations of the RPG, this rendition takes inspiration from the late 1970s model. The frame’s box was also designed with a military-esque look.

Fifteen percent of all sales from the RPG will be donated to Headstrong, an organization whose mission is to provide cost free mental health treatment for veterans.

“We were looking to create a partnership with another Made in America brand, not even necessarily Made in New York,” said Gerard Masci, co-founder of Lowercase. “We met with Andrew Livingston [the company’s owner] at our Brooklyn Army Terminal Factory and discussed how our two companies would be able to work together on a project.”

With the aesthetic of Knickerbocker Mfg. Co.’s apparel having a clean, structured vibe and considering the location of Lowercase’s factory, the recreation of the RPG frame seemed to make sense along with its charitable element with Headstrong.

“We exaggerated the shape to make it slightly more modern, but maintained the integrity from 40 years ago,” said Brian Vallario, co-founder of Lowercase.

The RPG from Lowercase features hand polished Mazzucchelli acetate, OBE German engineered five barrel hinges, OBE coated screws and Carl Zeiss CR-39 lenses with optional polarization as well as 100 percent UVA/UVB protection.

Knickerbocker was originally founded as a private label manufacturing company to service a community of designers and makers. After being acquired by Andrew Livingston, Knickerbocker Mfg. Co., began in the spring of 2013 as an attempt to make their goods available to everyone.

The collaboration RPG frames are now available on Knickerbockermfg.com and Lowercase.com.