New Era 59Fifty Seattle Mariners 1977 Cooperstown Wool Fitted Hat Royal Blue $39.99 $39.99 Fitted Hat Sizes Choose an option77 1/87 1/47 3/87 1/27 5/87 3/48Clear New Era 59Fifty Seattle Mariners 1977 Cooperstown Wool Fitted Hat Royal Blue quantity Add to cart SKU: N/A Categories: Fitted Hats, Hats, MLB, Seattle Mariners, Teams Tags: Cooperstown, CORE, MLB, MLB Stock, Wool Brand: New Era, New Era 59Fifty Hats Additional information Additional information Fitted Hat Sizes 7, 7 1/8, 7 1/4, 7 3/8, 7 1/2, 7 5/8, 7 3/4, 8 Color Royal Related products New Era 59Fifty Atlanta Braves Fitted Black White Hat New Era 59Fifty Boston Red Sox Fitted Blackout All Black Hat New Era 59Fifty San Diego Padres Fitted Black Black White Hat