diff --git a/functions-images.php b/functions-images.php
index 0b96e33..15bd84c 100644
--- a/functions-images.php
+++ b/functions-images.php
@@ -54,18 +54,20 @@ function get_timber_image_src( $timber_image, $size ) {
 /**
  * Returns the srcset for a TimberImage.
  *
- * @param  int|Timber\Image $timber_image Instance of Timber\Image or attachment ID.
- * @param  string|array     $size         Size key or array of the image to return.
+ * @param int|Timber\Image $timber_image Instance of Timber\Image or attachment ID.
+ * @param string|array     $size         Size key or array of the image to return.
+ * @param array            $args         Optional args for the srcset.
+ *
  * @return string|bool Image src. False if image can’t be found or no srcset is available.
  */
-function get_timber_image_srcset( $timber_image, $size ) {
+function get_timber_image_srcset( $timber_image, $size, $args = [] ) {
 	$image = Timmy::get_image( $timber_image, $size );
 
 	if ( ! $image ) {
 		return false;
 	}
 
-	return $image->srcset();
+	return $image->srcset( $args );
 }
 
 /**
diff --git a/lib/Image.php b/lib/Image.php
index c1230af..78e993b 100644
--- a/lib/Image.php
+++ b/lib/Image.php
@@ -326,6 +326,13 @@ public function src_default() {
 		return $src_default;
 	}
 
+	/**
+	 * Gets the srcset for an image.
+	 *
+	 * @param array $args Optional. Args for the srcset.
+	 *
+	 * @return false|string
+	 */
 	public function srcset( $args = [] ) {
 		$args = wp_parse_args( $args, [
 			'webp' => $this->is_webp(),