diff --git a/src/private/flat_map_base.h b/src/private/flat_map_base.h
index 16fd8587..eb237767 100644
--- a/src/private/flat_map_base.h
+++ b/src/private/flat_map_base.h
@@ -97,72 +97,6 @@ namespace etl
   public:
 
     typedef size_t size_type;
-
-    //*************************************************************************
-    /// Gets the current size of the flat_map.
-    ///\return The current size of the flat_map.
-    //*************************************************************************
-    size_type size() const
-    {
-      return vbase.size();
-    }
-
-    //*************************************************************************
-    /// Checks the 'empty' state of the flat_map.
-    ///\return <b>true</b> if empty.
-    //*************************************************************************
-    bool empty() const
-    {
-      return vbase.empty();
-    }
-
-    //*************************************************************************
-    /// Checks the 'full' state of the flat_map.
-    ///\return <b>true</b> if full.
-    //*************************************************************************
-    bool full() const
-    {
-      return vbase.full();
-    }
-
-    //*************************************************************************
-    /// Returns the capacity of the flat_map.
-    ///\return The capacity of the flat_map.
-    //*************************************************************************
-    size_type capacity() const
-    {
-      return vbase.capacity();
-    }
-
-    //*************************************************************************
-    /// Returns the maximum possible size of the flat_map.
-    ///\return The maximum size of the flat_map.
-    //*************************************************************************
-    size_type max_size() const
-    {
-      return vbase.max_size();
-    }
-
-    //*************************************************************************
-    /// Returns the remaining capacity.
-    ///\return The remaining capacity.
-    //*************************************************************************
-    size_t available() const
-    {
-      return vbase.available();
-    }
-
-  protected:
-
-    //*************************************************************************
-    /// Constructor.
-    //*************************************************************************
-    flat_map_base(vector_base& vbase)
-      : vbase(vbase)
-    {
-    }
-
-    vector_base& vbase;
   };
 }
 
diff --git a/src/private/flat_multimap_base.h b/src/private/flat_multimap_base.h
index eb9840f2..b9c0fc2b 100644
--- a/src/private/flat_multimap_base.h
+++ b/src/private/flat_multimap_base.h
@@ -83,72 +83,6 @@ namespace etl
   public:
 
     typedef size_t size_type;
-
-    //*************************************************************************
-    /// Gets the current size of the flat_multimap.
-    ///\return The current size of the flat_multimap.
-    //*************************************************************************
-    size_type size() const
-    {
-      return vbase.size();
-    }
-
-    //*************************************************************************
-    /// Checks the 'empty' state of the flat_multimap.
-    ///\return <b>true</b> if empty.
-    //*************************************************************************
-    bool empty() const
-    {
-      return vbase.empty();
-    }
-
-    //*************************************************************************
-    /// Checks the 'full' state of the flat_multimap.
-    ///\return <b>true</b> if full.
-    //*************************************************************************
-    bool full() const
-    {
-      return vbase.full();
-    }
-
-    //*************************************************************************
-    /// Returns the capacity of the flat_multimap.
-    ///\return The capacity of the flat_multimap.
-    //*************************************************************************
-    size_type capacity() const
-    {
-      return vbase.capacity();
-    }
-
-    //*************************************************************************
-    /// Returns the maximum possible size of the flat_multimap.
-    ///\return The maximum size of the flat_multimap.
-    //*************************************************************************
-    size_type max_size() const
-    {
-      return vbase.max_size();
-    }
-
-    //*************************************************************************
-    /// Returns the remaining capacity.
-    ///\return The remaining capacity.
-    //*************************************************************************
-    size_t available() const
-    {
-      return vbase.available();
-    }
-
-  protected:
-
-    //*************************************************************************
-    /// Constructor.
-    //*************************************************************************
-    flat_multimap_base(vector_base& vbase)
-      : vbase(vbase)
-    {
-    }
-
-    vector_base& vbase;
   };
 }
 
diff --git a/src/private/flat_multiset_base.h b/src/private/flat_multiset_base.h
index 4b495ddf..3bcd337e 100644
--- a/src/private/flat_multiset_base.h
+++ b/src/private/flat_multiset_base.h
@@ -84,71 +84,14 @@ namespace etl
 
     typedef size_t size_type;
 
-    //*************************************************************************
-    /// Gets the current size of the flat_multiset.
-    ///\return The current size of the flat_multiset.
-    //*************************************************************************
-    size_type size() const
-    {
-      return vbase.size();
-    }
-
-    //*************************************************************************
-    /// Checks the 'empty' state of the flat_multiset.
-    ///\return <b>true</b> if empty.
-    //*************************************************************************
-    bool empty() const
-    {
-      return vbase.empty();
-    }
-
-    //*************************************************************************
-    /// Checks the 'full' state of the flat_multiset.
-    ///\return <b>true</b> if full.
-    //*************************************************************************
-    bool full() const
-    {
-      return vbase.full();
-    }
-
-    //*************************************************************************
-    /// Returns the capacity of the flat_multiset.
-    ///\return The capacity of the flat_multiset.
-    //*************************************************************************
-    size_type capacity() const
-    {
-      return vbase.capacity();
-    }
-
-    //*************************************************************************
-    /// Returns the maximum possible size of the flat_multiset.
-    ///\return The maximum size of the flat_multiset.
-    //*************************************************************************
-    size_type max_size() const
-    {
-      return vbase.max_size();
-    }
-
-    //*************************************************************************
-    /// Returns the remaining capacity.
-    ///\return The remaining capacity.
-    //*************************************************************************
-    size_t available() const
-    {
-      return vbase.available();
-    }
-
   protected:
 
     //*************************************************************************
     /// Constructor.
     //*************************************************************************
-    flat_multiset_base(vector_base& vbase)
-      : vbase(vbase)
+    flat_multiset_base()
     {
     }
-
-    vector_base& vbase;
   };
 }
 
diff --git a/src/private/flat_set_base.h b/src/private/flat_set_base.h
index 22d1c58f..d494cfb4 100644
--- a/src/private/flat_set_base.h
+++ b/src/private/flat_set_base.h
@@ -97,72 +97,6 @@ namespace etl
   public:
 
     typedef size_t size_type;
-
-    //*************************************************************************
-    /// Gets the current size of the flat_set.
-    ///\return The current size of the flat_set.
-    //*************************************************************************
-    size_type size() const
-    {
-      return vbase.size();
-    }
-
-    //*************************************************************************
-    /// Checks the 'empty' state of the flat_set.
-    ///\return <b>true</b> if empty.
-    //*************************************************************************
-    bool empty() const
-    {
-      return vbase.empty();
-    }
-
-    //*************************************************************************
-    /// Checks the 'full' state of the flat_set.
-    ///\return <b>true</b> if full.
-    //*************************************************************************
-    bool full() const
-    {
-      return vbase.full();
-    }
-
-    //*************************************************************************
-    /// Returns the capacity of the flat_set.
-    ///\return The capacity of the flat_set.
-    //*************************************************************************
-    size_type capacity() const
-    {
-      return vbase.capacity();
-    }
-
-    //*************************************************************************
-    /// Returns the maximum possible size of the flat_set.
-    ///\return The maximum size of the flat_set.
-    //*************************************************************************
-    size_type max_size() const
-    {
-      return vbase.max_size();
-    }
-
-    //*************************************************************************
-    /// Returns the remaining capacity.
-    ///\return The remaining capacity.
-    //*************************************************************************
-    size_t available() const
-    {
-      return vbase.available();
-    }
-
-  protected:
-
-    //*************************************************************************
-    /// Constructor.
-    //*************************************************************************
-    flat_set_base(vector_base& vbase)
-      : vbase(vbase)
-    {
-    }
-
-    vector_base& vbase;
   };
 }