diff --git a/msg/BoundingBox2D.msg b/msg/BoundingBox2D.msg
index e42f54d..85a306d 100644
--- a/msg/BoundingBox2D.msg
+++ b/msg/BoundingBox2D.msg
@@ -7,7 +7,7 @@
 # The 2D position (in pixels) and orientation of the bounding box center.
 geometry_msgs/Pose2D center
 
-# The size (in pixels) of the bounding box surrounding the object relative
+# The total size (in pixels) of the bounding box surrounding the object relative
 #   to the pose of its center.
 float64 size_x
 float64 size_y
diff --git a/msg/BoundingBox3D.msg b/msg/BoundingBox3D.msg
index 00713ad..cb8f49d 100644
--- a/msg/BoundingBox3D.msg
+++ b/msg/BoundingBox3D.msg
@@ -5,6 +5,6 @@
 # The 3D position and orientation of the bounding box center
 geometry_msgs/Pose center
 
-# The size of the bounding box, in meters, surrounding the object's center
+# The total size of the bounding box, in meters, surrounding the object's center
 #   pose.
 geometry_msgs/Vector3 size