• The W stands for women's sizes and the M is for men's.
    Answered on 1/19/2011 12:00:00 AM by Customer Care from Sierra Trading Post
  • A U.S. Men's 13 corresponds to a European 47. I added arrows to the sizing chart to make it more obvious:||Size Euro(US): 36(W 5) 37(W 6) 38(W 7, M 6) 39(W 8, M 7) 40(W 9, M 8) 41(W 10, M 9) 42(W 10½, M 9½) 43(W 11, M 10) 44(W 12, M 11) 45(M 12) 46(M 12½) >>> 47(M 13) <<< 48(M 14)
    Answered on 1/26/2011 12:00:00 AM by Matt from Lakewood, CO