diff --git a/LICENSE b/LICENSE
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--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,30 @@
+Copyright Andrey Mulik (c) 2019
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+
+    * Neither the name of Andrey Mulik nor the names of other
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/sdp-deepseq.cabal b/sdp-deepseq.cabal
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+++ b/sdp-deepseq.cabal
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+name:          sdp-deepseq
+version:       0.2
+category:      Data Structures
+
+synopsis:      DeepSeq SDP extension.
+description:   Provides NFData instances for SDP structures.
+
+author:        Andrey Mulik
+maintainer:    <work.a.mulik@gmail.com>
+bug-reports:   https://github.com/andreymulik/sdp-deepseq/issues
+
+copyright:     2019 Andrey Mulik
+license-file:  LICENSE
+license:       BSD3
+
+build-type:    Simple
+cabal-version: >=1.10
+
+source-repository head
+  type: git
+  location: https://github.com/andreymulik/sdp-deepseq
+
+---            _      _____ ______ ______   ___  ______ __   __              ---
+---           | |    |_   _|| ___ \| ___ \ / _ \ | ___ \\ \ / /              ---
+---           | |      | |  | |_/ /| |_/ // /_\ \| |_/ / \ V /               ---
+---           | |      | |  | ___ \|    / |  _  ||    /   \ /                ---
+---           | |____ _| |_ | |_/ /| |\ \ | | | || |\ \   | |                ---
+---           \_____/ \___/ \____/ \_| \_|\_| |_/\_| \_|  \_/                ---
+
+Library
+  default-language: Haskell2010
+  hs-source-dirs:   src
+  
+  build-depends:
+    base    >= 4.12 && < 5,
+    sdp     >= 0.2  && < 0.3,
+    deepseq >= 1.4  && < 1.5
+  
+  ghc-options: -Wall -Wno-orphans
+  
+  exposed-modules:
+    Control.DeepSeq.SDP
+
+
+
diff --git a/src/Control/DeepSeq/SDP.hs b/src/Control/DeepSeq/SDP.hs
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--- /dev/null
+++ b/src/Control/DeepSeq/SDP.hs
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+{-# LANGUAGE Safe, MagicHash, FlexibleInstances #-}
+
+{- |
+    Module      :  Control.DeepSeq.SDP
+    Copyright   :  (c) Andrey Mulik 2019
+    License     :  BSD-style
+    Maintainer  :  work.a.mulik@gmail.com
+    Portability :  portable
+    
+    @Control.DeepSeq.SDP@ contains 'NFData' instances for @sdp@ types.
+-}
+module Control.DeepSeq.SDP
+(
+  -- * Exports.
+  module Control.DeepSeq
+)
+where
+
+import Prelude ()
+import SDP.SafePrelude
+
+import SDP.Templates.AnyChunks
+import SDP.Templates.AnyBorder
+import SDP.Prim.SArray
+import SDP.Prim.SBytes
+
+import Control.DeepSeq
+
+default ()
+
+--------------------------------------------------------------------------------
+
+{- NFData instances. -}
+
+instance (NFData e) => NFData (SArray# e) where rnf = o_foldr' deepseq ()
+instance (NFData e) => NFData (SBytes# e) where rnf = rwhnf
+
+instance (NFData i, NFData (rep e)) => NFData (AnyBorder rep i e)
+  where
+    rnf (AnyBorder l u rep) = l `deepseq` u `deepseq` rnf rep
+
+instance (NFData (rep e)) => NFData (AnyChunks rep e)
+  where
+    rnf = foldr' deepseq () . toChunks
+
+--------------------------------------------------------------------------------
+
+{- NFData1 and NFData2 instances. -}
+
+instance NFData1 SArray# where liftRnf rnf' = o_foldr' (seq . rnf') ()
+
+instance (NFData i, NFData1 rep) => NFData1 (AnyBorder rep i)
+  where
+    liftRnf rnf' (AnyBorder l u rep) = l `deepseq` u `deepseq` liftRnf rnf' rep
+
+instance (NFData1 rep) => NFData1 (AnyChunks rep)
+  where
+    liftRnf rnf' = foldr' (seq . liftRnf rnf') () . toChunks
+
+instance (NFData1 rep) => NFData2 (AnyBorder rep)
+  where
+    liftRnf2 rnf' rnf'' (AnyBorder l u rep) = rnf' l `seq` rnf' u `seq` liftRnf rnf'' rep
+
+
+