diff --git a/src/graph2/frontend/SubStream.cpp b/src/graph2/frontend/SubStream.cpp
new file mode 100644
index 0000000..e6fa605
--- /dev/null
+++ b/src/graph2/frontend/SubStream.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2018 ARM Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "arm_compute/graph2/frontend/SubStream.h"
+
+#include "arm_compute/graph2/Graph.h"
+#include "arm_compute/graph2/frontend/ILayer.h"
+
+namespace arm_compute
+{
+namespace graph2
+{
+namespace frontend
+{
+SubStream::SubStream(IStream &s)
+    : _s(s)
+{
+    _hints     = s.hints();
+    _tail_node = s.tail_node();
+}
+
+void SubStream::add_layer(ILayer &layer)
+{
+    auto nid   = layer.create_layer(*this);
+    _tail_node = nid;
+}
+
+const Graph &SubStream::graph() const
+{
+    return _s.graph();
+}
+
+Graph &SubStream::graph()
+{
+    return _s.graph();
+}
+} // namespace frontend
+} // namespace graph2
+} // namespace arm_compute