The Elín socks are part of the book Socks of Iceland which is released in the form of a Club: get a pattern every week until the end of the year 2020. You can join at anytime.
For more info, please visit https://icelandicknitter.com/product/socks-of-iceland-club/

Sizes from toddlers to adults
Finished measurements:
Foot circumference: 12.5(14,15.5,17)18.5,20,21.5,23 cm / 4¾(5½,6,6¾)7¼,8½,9”
Mid-calf circumference: 15.5(17.5,20,21.5)23,24.5,26,27.5 cm / 6(7,7¾,8½)9,9¾,10¼,11”
Foot length: 10(12.5,15,18,20.5)23.25.5.28 cm / 4½(5½,6½,7¼)8,9,10,11”
Leg length: 14.5(16.5,18.5,23)27,30,33,36 cm / 5¾(6½,7¼,9)10½,12,13,14”

Recommended fit: 15% negative ease around the foot and 10% in length. Length and height adjustable.

Shown in Size 1 and 5.