This pattern is worked with Brioche crochet technique, which works with 2 colors to form shapes in vertical lines, always working 1 color per round.

Sizes
Size 1: 36 and 37 (EU size)
Size 2: 38 and 39 (EU size)
Size 3: 40 and 41 (EU size)

Foot length : 21 (23, 25) cm/ 8 ¼ (9, 9 ¾ ) in
Circumference of foot around the ball: 20 (22, 24) cm/
7 ¾ (8 ½ , 9 ½ ) in

I’ve made a tutorial, but this was made in Spanish long time before I’ve translated this pattern into English. If you want you can, put subtitles although maybe the YouTube translation doesn’t fit 100% to what I want to express. Remember to set the video quality to 1080 (HD) for a better experience