diff --git a/src/Message/Request.php b/src/Message/Request.php
index 964ad7d..bf409ad 100644
--- a/src/Message/Request.php
+++ b/src/Message/Request.php
@@ -3,12 +3,13 @@
 namespace WellRESTed\Message;
 
 use Psr\Http\Message\RequestInterface;
+use Psr\Http\Message\StreamInterface;
 use Psr\Http\Message\UriInterface;
 
 class Request extends Message implements RequestInterface
 {
     /** @var string  */
-    protected $method = "GET";
+    protected $method;
     /** @var string */
     protected $requestTarget;
     /** @var UriInterface */
@@ -16,10 +17,39 @@ class Request extends Message implements RequestInterface
 
     // ------------------------------------------------------------------------
 
-    public function __construct()
-    {
+    /**
+     * @param UriInterface $uri
+     * @param string $method
+     * @param array $headers
+     * @param StreamInterface $body
+     */
+    public function __construct(
+        UriInterface $uri = null,
+        $method = "GET",
+        array $headers = null,
+        StreamInterface $body = null
+    ) {
         parent::__construct();
-        $this->uri = new Uri();
+
+        if ($uri !== null) {
+            $this->uri = $uri;
+        } else {
+            $this->uri = new Uri();
+        }
+
+        $this->method = $method;
+
+        if ($headers) {
+            foreach ($headers as $name => $values) {
+                foreach ($values as $value) {
+                    $this->headers[$name] = $value;
+                }
+            }
+        }
+
+        if ($body !== null) {
+            $this->body = $body;
+        }
     }
 
     public function __clone()
diff --git a/test/tests/unit/Message/RequestTest.php b/test/tests/unit/Message/RequestTest.php
index 526558d..e88092d 100644
--- a/test/tests/unit/Message/RequestTest.php
+++ b/test/tests/unit/Message/RequestTest.php
@@ -15,6 +15,7 @@ use WellRESTed\Message\Uri;
 class RequestTest extends \PHPUnit_Framework_TestCase
 {
     // ------------------------------------------------------------------------
+    // Construction
 
     /**
      * @covers WellRESTed\Message\Request::__construct
@@ -25,6 +26,48 @@ class RequestTest extends \PHPUnit_Framework_TestCase
         $this->assertNotNull($request);
     }
 
+    /**
+     * @covers WellRESTed\Message\Request::__construct
+     */
+    public function testCreatesInstanceWithUri()
+    {
+        $uri = $this->prophesize('Psr\Http\Message\UriInterface');
+        $uri = $uri->reveal();
+        $request = new Request($uri);
+        $this->assertSame($uri, $request->getUri());
+    }
+
+    /**
+     * @covers WellRESTed\Message\Request::__construct
+     */
+    public function testCreatesInstanceWithMethod()
+    {
+        $method = "POST";
+        $request = new Request(null, $method);
+        $this->assertSame($method, $request->getMethod());
+    }
+
+    /**
+     * @covers WellRESTed\Message\Request::__construct
+     */
+    public function testSetsHeadersOnConstruction()
+    {
+        $request = new Request(null, null, [
+            "X-foo" => ["bar","baz"]
+        ]);
+        $this->assertEquals(["bar","baz"], $request->getHeader("X-foo"));
+    }
+
+    /**
+     * @covers WellRESTed\Message\Request::__construct
+     */
+    public function testSetsBodyOnConstruction()
+    {
+        $body = $this->prophesize('\Psr\Http\Message\StreamInterface');
+        $request = new Request(null, null, [], $body->reveal());
+        $this->assertSame($body->reveal(), $request->getBody());
+    }
+
     // ------------------------------------------------------------------------
     // Request Target