THE KEY STEPS TO GETTING THE RIGHT SIZE DOCPODS: FULL LENGTH INSOLES  NON FULL LENGTH INSOLES  1. Measure your existing shoe insole:  1. Measure from your heel to ball of foot:   2. Then compare your measurements from above to match the product size charts below: (you can trim to fit the insoles by approximately 1cm) Docpods Regular Size Guide - for Slimline, 3 Quarter, Sports   US UK EURO SLIMLINE 3 QUARTER  SPORTS  Size  cm cm cm Small  4-7  4-8  3-6.5  4-7.5  35-40 16  16.3  25.8 Medium  7-9   8-10  6-9  7-10  39-43  17.4 17.2  27.4 Large   9-13  10-14  8-12  9-13  42-47 19.3   18.2 29.4 Docpods Ultra Size Guide - for Ultra Soft   XXS XS S M L XL EURO  34  35.5-37.5  38-40  40.5-42  42.5-44  44.5-46.5 UK  2.5  3-4.5  5-6.5  7-8  8.5-9.5  10-12 US MENS  4-5  5.5-6  6.5-7.5  8-9  9.5-10.5  11-13.5 US WOMENS  3.5-5  5.5-7  7.5-9  9.5-10.5  11-12  13-14 LENGTH (cm) 23.2cm 24.9cm 26.2cm 28.8cm 30cm  31.2cm Docpods Kids Size Guide - for Docpods Kids Fit only   Size SPORTS  SLIMLINE XXS 12-1  19.5cm 13cm  XS 2-3 22.4cm  15.3cm  Docpods Foot Pillow - Trim to Fit   S L US MENS  4.5 - 9  9 - 13 US WOMENS  6 - 10  10 - 14 LENGTH (cm) 26.5cm 29.2cm