Seattle Mariners Drop Grey Unis for 2023, Navy Blue now Primary

SEATTLE MARINERS 20TH ANNIVERSARY NAVY ICY BRIM NEW ERA FITTED HAT

During the era of flannel baseball uniforms, the undershirt was usually a two-layer wool blend/cotton fabric with sleeves matching the primary team color. A little digging turned up the Canadian mill which made the shirts for the major uniform manufacturers of the day.

Ebbets Field Flannels Fungo Shirt - Black Sleeves and Logo

Evosheild Nashville Sounds EvoShield Adult Authentic Powder Blue Brewskis Jersey 2x / Add Name ($20)