SIZES: Junior (Adult Small, Adult Medium, Adult Large).
Cuff Circumference: 6¾ (8, 8¾, 9¼ ) inches when not stretched, but comfortably stretches upto 12 (14½, 15½, 16½) inches.
Foot Circumference: 5¼ (6¾, 7½, 8½) inches not stretched, but comfortably stretches upto 6¾ (8¾, 9¾, 10¾) inches.
Foot Length: Adjustable according to personal preference.
Length from Top of Cuff to the Top of Heel (unfolded Cuff): 18 (21, 21¾, 23¼) inches.

I am sharing a suggestion for the final Foot length:
FINAL FOOT LENGTHS
JUNIOR SIZES US size 1Y (European 32) = 7¾ inches
US size 2Y (33) = 8 inches
US size 3Y (34) = 8½ inches
US size 4Y (36) = 8¾ inches
US size 5Y (37) = 9 inches
US size 6Y (38) = 9⅜ inches
US size 7Y (39) = 9⅝ inches
WOMEN’S SIZES US size 4 shoe (European 35) = 8⅜ inches
US size 5 shoe (36) = 8⅝ inches
US size 6 shoe (37) = 9 inches
US size 7 shoe (38) = 9¼ inches
US size 8 shoe (39) = 9⅝ inches
US size 9 shoe (40) = 10 inches
US size 10 shoe (41) = 10⅜ inches
MEN’S SIZES US size 7 shoe (European 39) = 9⅝ inches
US size 8 shoe (40) = 10 inches
US size 9 shoe (42) = 10½ inches
US size 10 shoe (43) = 10¾ inches
US size 11 shoe (44) = 11 inches
US size 12 shoe (45) = 11½ inches
US size 13 shoe (46) = 11¾ inches
Here’s a Sock Pattern you can use to knit socks in many sizes for you, your family and friends and for charity! Step by step detailed instructions are given. Enjoy !!!