Hats

Alpha Size Age Head Circumference
XS/S 3-6 20 1/2 - 21 1/2
M/L 6-10 21 1/2 - 22 1/2

Socks

Alpha Size Age Approx Size Foot Length Over the Calf Crew
S 2-5 7 1/2 - 12T 6 11 1/2 6 1/2
M 6-8 12 1/2 T - 3 7 12 1/2 7 7/8
L 10-12 3-7 8 1/4 13 3/4 9

Shoes

Length USA EU JP
7.48 13 30 19
7.67 13.5 31 19.5
7.87 1 32 20
8 2 33 20.5
8.26 3 34 21
8.46 4 35 21.5
8.66 5 36 22
8.85 5.5 37 22.5
9 6 38 23
9.25 6.5 39 23.5
9.44 7 40 24

Hats

Alpha Size Age Head Circumference
XS/S 3-6 52-55
M/L 6-10 55-57

Socks

Alpha Size Age Approx Size Foot Length Over the Calf Crew
S 2-5 7 1/2 - 12T 15 29 17
M 6-8 12 1/2 T - 3 18 32 20
L 10-12 3-7 21 35 23

Shoes

Length USA EU JP
19 13 30 19
19.5 13.5 31 19.5
20 1 32 20
20.5 2 33 20.5
21 3 34 21
21.5 4 35 21.5
22 5 36 22
22.5 5.5 37 22.5
23 6 38 23
23.5 6.5 39 23.5
24 7 40 24