How to Say "inner sole" in Spanish
The Spanish word for “inner sole” is “plantilla” — B2 level.
English → SpanishB2
nounB2
footwear component

Examples
Estas botas me quedan grandes, necesito una plantilla.
These boots are too big for me; I need an insole.
El podólogo me recomendó plantillas ortopédicas.
The podiatrist recommended orthopedic insoles.
Las plantillas de gel son muy cómodas para caminar.
Gel insoles are very comfortable for walking.
Usually Plural
Since we have two feet, you will most often see this used in the plural: 'las plantillas'.
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