[android-components](../../index.md) / [mozilla.components.concept.fetch](../index.md) / [MutableHeaders](index.md) / [size](./size.md)

# size

`val size: `[`Int`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html) [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/concept/fetch/src/main/java/mozilla/components/concept/fetch/Headers.kt#L139)

Overrides [Headers.size](../-headers/size.md)

Returns the number of headers (key / value combinations).

