Boston Red Sox Officially Licensed '47 Clean-Up - Brick Line - Citgo Fenway. The classic Red Sox hat has an update with a Boston Landmark, relaxed fit hat with a raised embroidery Red Sox Citgo Sign logo, this hat is a garment washed cotton front for a broken-in look and feel and a cool breathable mesh back. This hat has a plastic snapback adjustable strap and is one size fits all.