Boston Red Sox 47 Clean-Up - Chasm - Blazer.  Red Sox relaxed fit hat with a sewn on vintage faded applique B logo. If you are looking for a hat with the pre-worn in look, this is the pre-tattered Sox logo. This hat is 100% garment washed cotton for a broken-in look and feel. This hat has a cloth adjustable strap and is one size fits all.