Wigens of Sweden Mens Black Wool blend shell cap with convertible black ear muffs and quilted polyester lining at Robert Frost Fine Footwear and frostshoes.com. Wigens Swedish cap factory manufactures these fabulous mens baseball cap fit for the elements if they persisit. Wear this cap as a formal piece or casually with comfort and style. Wigens caps are european sized and translate to U.S. as follows; Euro 55 (as shown in the drop down menu)= 6 3/4 US, 56= 7 US, 57= 7 1/8 US, 58= 7 1/4 US, 59= 7 3/8 US, 60= 7 1/2 US, 61= 7 5/8 US, 61 = 7 3/4 US. Please adhere to the affor mentioned sizing chart or message/call Robert Frost Fine Footwear and frostshoes.com if we can assist you in fitting this Wigens mens cap.