diff --git a/src/TensorFlowNET.Core/Tensors/Tensor.Pack.cs b/src/TensorFlowNET.Core/Tensors/Tensor.Pack.cs
new file mode 100644
index 00000000..b37612c8
--- /dev/null
+++ b/src/TensorFlowNET.Core/Tensors/Tensor.Pack.cs
@@ -0,0 +1,15 @@
+using NumSharp;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Tensorflow
+{
+    public partial class Tensor
+    {
+        public Tensor Pack(object[] sequences)
+        {
+            return sequences[0] as Tensor;
+        }
+    }
+}
diff --git a/src/TensorFlowNET.Core/Tensors/Tensor.cs b/src/TensorFlowNET.Core/Tensors/Tensor.cs
index 943edaaf..99a373c4 100644
--- a/src/TensorFlowNET.Core/Tensors/Tensor.cs
+++ b/src/TensorFlowNET.Core/Tensors/Tensor.cs
@@ -39,7 +39,7 @@ namespace Tensorflow
     /// Internally, TensorFlow represents tensors as n-dimensional arrays of base datatypes.
     /// </summary>
     [SuppressMessage("ReSharper", "ConvertToAutoProperty")]
-    public partial class Tensor : DisposableObject, ITensorOrOperation, _TensorLike, ITensorOrTensorArray
+    public partial class Tensor : DisposableObject, ITensorOrOperation, _TensorLike, ITensorOrTensorArray, IPackable<Tensor>
     {
         private readonly int _id;
         private readonly Operation _op;
diff --git a/src/TensorFlowNET.Core/Tensors/TensorShape.cs b/src/TensorFlowNET.Core/Tensors/TensorShape.cs
index bfd90a75..b3099799 100644
--- a/src/TensorFlowNET.Core/Tensors/TensorShape.cs
+++ b/src/TensorFlowNET.Core/Tensors/TensorShape.cs
@@ -125,6 +125,9 @@ namespace Tensorflow
         {
             get
             {
+                if (!slice.Stop.HasValue)
+                    slice.Stop = dims.Length - slice.Start + 1;
+
                 if (slice.Start.HasValue == false || slice.Length.HasValue == false)
                     throw new ArgumentException("Slice must has Start and Length.");