Boston Red Sox 47 Clean-Up - Freshman - Yosemite. The harder working cousin of our Red Sox Clean-Up Freshman. Introducing the Yosemite Freshman Red Sox Navy Hat with Natural front panel. Relaxed fit hat with a white front with a raised tackle twill applique Red Sox B 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.