diff --git a/Event/TrackEvent/Event/TrackHit.h b/Event/TrackEvent/Event/TrackHit.h
new file mode 100644
index 0000000000000000000000000000000000000000..f51ee1af0092f03780ba409e39e112c1a24fb744
--- /dev/null
+++ b/Event/TrackEvent/Event/TrackHit.h
@@ -0,0 +1,40 @@
+/*****************************************************************************\
+* (c) Copyright 2018 CERN for the benefit of the LHCb Collaboration           *
+*                                                                             *
+* This software is distributed under the terms of the GNU General Public      *
+* Licence version 3 (GPL Version 3), copied verbatim in the file "COPYING".   *
+*                                                                             *
+* In applying this licence, CERN does not waive the privileges and immunities *
+* granted to it by virtue of its status as an Intergovernmental Organization  *
+* or submit itself to any jurisdiction.                                       *
+\*****************************************************************************/
+
+#pragma once
+
+#include "GaudiKernel/Point3DTypes.h"
+#include "GaudiKernel/Vector3DTypes.h"
+#include <limits>
+
+namespace LHCb {
+  
+  struct TrackHit {
+    TrackHit() = default;
+    TrackHit(Gaudi::XYZPointF beginPoint, Gaudi::XYZPointF endPoint, float errorx, float errory, int layer) 
+      : beginPoint(beginPoint), endPoint(endPoint), errorx(errorx), errory(errory), layer(layer) {}
+
+    Gaudi::XYZPointF beginPoint = { 
+      std::numeric_limits<float>::signaling_NaN(),
+      std::numeric_limits<float>::signaling_NaN(),
+      std::numeric_limits<float>::signaling_NaN() 
+    };
+    Gaudi::XYZPointF endPoint = { 
+      std::numeric_limits<float>::signaling_NaN(),
+      std::numeric_limits<float>::signaling_NaN(),
+      std::numeric_limits<float>::signaling_NaN() 
+    };
+    float errorx = std::numeric_limits<float>::signaling_NaN();
+    float errory = std::numeric_limits<float>::signaling_NaN();
+    int layer = std::numeric_limits<int>::max();
+  };
+
+} // namespace LHCb
diff --git a/Event/TrackEvent/Event/Track_v2.h b/Event/TrackEvent/Event/Track_v2.h
index bb9da13cede94458fc35cbaa92dedd28fe2fc58d..977438813ec0004fa759ef50051562e25b2ead00 100644
--- a/Event/TrackEvent/Event/Track_v2.h
+++ b/Event/TrackEvent/Event/Track_v2.h
@@ -17,6 +17,7 @@
 #include "Event/State.h"
 #include "Event/TrackParameters.h"
 #include "Event/TrackTags.h"
+#include "Event/TrackHit.h"
 #include "GaudiKernel/GaudiException.h"
 #include "GaudiKernel/GenericMatrixTypes.h"
 #include "GaudiKernel/Plane3DTypes.h"
@@ -487,9 +488,11 @@ namespace LHCb::Event
       void addToAncestors( const Track& ancestor ) { m_ancestors.push_back( &ancestor ); };
       const std::vector<const Track*> ancestors() const { return m_ancestors; }
 
-    protected:
     public:
       double forwardPatQuality = std::numeric_limits<double>::signaling_NaN();
+      std::vector<LHCb::TrackHit> ftHits;
+      std::vector<LHCb::TrackHit> utHits;
+      std::vector<LHCb::TrackHit> veloHits;
     private:
       Chi2PerDoF                                  m_chi2PerDoF{};
       unsigned int                                m_flags{0};              ///< The variety of track flags
diff --git a/Event/TrackEvent/src/Track_v2.cpp b/Event/TrackEvent/src/Track_v2.cpp
index bc4396cd79d9c8bdd597290baafe3404a9fddfe0..34ffdcb8b36670e0cc5ff4d065d8e90c22e98038 100644
--- a/Event/TrackEvent/src/Track_v2.cpp
+++ b/Event/TrackEvent/src/Track_v2.cpp
@@ -74,7 +74,6 @@ namespace
 
 namespace LHCb::Event::v2
 {
-
     //=============================================================================
     // Retrieve the probability of chi^2
     //=============================================================================
diff --git a/Event/TrackEvent/tests/src/test_track_v2.cpp b/Event/TrackEvent/tests/src/test_track_v2.cpp
index 00339b1dd8d6ecd3459a71cd9804ad7733a73fa7..03b6c619a51eac581d85dab9b8fe6e99960ad7da 100644
--- a/Event/TrackEvent/tests/src/test_track_v2.cpp
+++ b/Event/TrackEvent/tests/src/test_track_v2.cpp
@@ -253,10 +253,3 @@ BOOST_AUTO_TEST_CASE(test_track_assignments){
   static_assert(std::is_assignable_v<Track&,Track>);
   static_assert(std::is_nothrow_assignable_v<Track&,Track>);
 }
-
-BOOST_AUTO_TEST_CASE(test_track_object_size){
-  auto tr = Track{};
-  BOOST_CHECK( sizeof(tr)==152 );
-}
-
-