Alternate Mets Blue Jerseys & Hats – Blogging Mets

Uniforms – Blogging Mets

Alternate Mets Blue Jerseys & Hats – Blogging Mets

The Mets on Tumblr — The History of Mets Uniforms

Uniforms – Blogging Mets

The Mets Road Alternates Need to Go Away Forever – Uniform Report

Mets Team Store on X: The Official @Mets Blue Home Alternate jersey for 2020. 🔥 @Nike #Mets #teamstore #LGM #NYM #CitiField / X

New York Mets on X: We've given the @MrMet BP Cap a new look and added a new alternate road cap to match our blue alternate road jersey. / X

We've found the answer, the blue alternate jersey : r/NewYorkMets

The Mets on Tumblr — The History of Mets Uniforms