San Francisco 49ers reveal first-ever alternate jerseys on Snapchat
Black Sundays: 49ers Unveil Alternate Jersey – NBC Bay Area
49ers' First-Ever Alternate Uniform Features Black Jerseys, Black Pants
Photo gallery of 49ers new throwback alternate uniforms for 2018 - Niners Nation
San Francisco 49ers Unveil New Alternate Black Uniforms for 2015
The Seattle Seahawks' Throwbacks Are Easily The NFL's Best New Uniforms
Photos: Saints unveil new black helmet for 2022 NFL season
49ers honor 1994 Super Bowl championship team with throwback uniforms
San Francisco 49ers Get New All-Black Alternate Uniforms - WearTesters