[New Era] San Francisco 49ers 39THIRTY [NFL TEAM CLASSIC FLEX FIT CAP] SAN FRANCISCO 49ERS 3930 (SM (approx. 55.8-57.7cm), Red) [Used]

S=S/M (approx. 55.8-57.7cm) M=M/L (approx. 57.7-60.6cm) L=L/XL (approx. 60.6-63.5cm) 39THIRTY FLEX FIT model with a stretchy sweatband for a comfortable fit.