Introducing the Joma brand size guide. This size guide is specific to the TopFlex Foot Shape and Slam Foot Shape models

Shoe size	Insole length (cm)	Insole width - metatarsal area (cm)
36	24.3	8.35
37	24.9	8.5
38	25.6	8.65
39	26.3	8.8
40	26.9	8.95
41	27.6	9.1
42	28.3	9.25
43	28.9	9.4
44	29.6	9.55
45	30.3	9.7
46	30.9	9.85