diff --git a/pyrail/models.py b/pyrail/models.py
index f808c17..c59c3d2 100644
--- a/pyrail/models.py
+++ b/pyrail/models.py
@@ -88,10 +88,10 @@ class Segment(DataClassORJSONMixin):
 
 @dataclass
 class CompositionSegments(DataClassORJSONMixin):
+    """Represents multiple journey segments, each having its own composition details."""
     number: int  # Number of segments
     segment: List[Segment] = field(metadata=field_options(alias="segment"))  # List of segments
 
-
 @dataclass
 class CompositionResponse(ApiResponse):
     composition: CompositionSegments  # Composition details