Docpods Regular Size Guide - for Superslim, Slimline, 3 Quarter, Sports
  US UK EURO
Size
Small  4-7  4-8  3-6.5  4-7.5  35-40
Medium  7-9   8-10  6-9  7-10  39-43
Large   9-13  10-14  8-12  9-13  42-47

Docpods Ultra Size Guide - for Ultra, Ultra Soft, Heat Moldable and Dual Density.
  XXS XS S M L XL XXL
EURO  34  35.5-37.5  38-40  40.5-42  42.5-44  44.5-46.5  47-50
UK  2.5  3-4.5  5-6.5  7-8  8.5-9.5  10-12  12.5-14
US MENS  4-5  5.5-6  6.5-7.5  8-9  9.5-10.5  11-13.5  13.5-15.5
US WOMENS  3.5-5  5.5-7  7.5-9  9.5-10.5  11-12  13-14  -

Docpods Kids Size Guide - for Docpods Kids Fit only
  Size
XXS 1-3
XS 4-6
S 4-7

Docpods Foot Pillow - Trim to Fit
  S L
US MENS  4.5 - 9  9 - 13
US WOMENS  6 - 10  10 - 14