Black Diamond Gaiters Size Chart
  Small Medium Large X-Large
US Men's Shoe Size (plastic boots) 5-7 7½-8½ 9-10½ 11-12
US Men's Shoe Size(leather boots) 7-8½ 8½-10 10½-12 12+

These are general guidelines only, sizes are not guaranteed. But no worries, since at SunnySports we offer our exclusive PFF Guaranty