diff --git a/src/FinanceOrder.php b/src/FinanceOrder.php
new file mode 100644
index 0000000..33dc427
--- /dev/null
+++ b/src/FinanceOrder.php
@@ -0,0 +1,114 @@
+<?php declare(strict_types=1);
+
+/**
+ * Copyright (c), Includable.
+ *
+ * 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.
+ */
+
+namespace PKPass;
+
+use ZipArchive;
+
+class FinanceOrder extends PKPass
+{
+    const FILE_TYPE = 'order';
+    const FILE_EXT = 'order';
+    const MIME_TYPE = 'application/vnd.apple.finance.order';
+    const PAYLOAD_FILE = 'order.json';
+    const HASH_ALGO = 'sha256';
+
+    /**
+     * Sub-function of create()
+     * This function creates the hashes for the files and adds them into a json string.
+     *
+     * @throws PKPassException
+     */
+    protected function createManifest()
+    {
+        // Creates SHA hashes for all files in package
+        $sha = [];
+        $sha[self::PAYLOAD_FILE] = hash(self::HASH_ALGO, $this->json);
+
+        // Creates SHA hashes for string files in each project.
+        foreach ($this->locales as $language => $strings) {
+            $sha[$language . '.lproj/' . self::FILE_TYPE . '.strings'] = hash(self::HASH_ALGO, $strings);
+        }
+
+        foreach ($this->files as $name => $path) {
+            $sha[$name] = hash(self::HASH_ALGO, file_get_contents($path));
+        }
+
+        foreach ($this->remote_file_urls as $name => $url) {
+            $sha[$name] = hash(self::HASH_ALGO, file_get_contents($url));
+        }
+
+        foreach ($this->files_content as $name => $content) {
+            $sha[$name] = hash(self::HASH_ALGO, $content);
+        }
+
+        return json_encode((object)$sha);
+    }
+
+    /**
+     * Creates .pkpass zip archive.
+     *
+     * @param string $manifest
+     * @param string $signature
+     * @return string
+     * @throws PKPassException
+     */
+    protected function createZip($manifest, $signature)
+    {
+        // Package file in Zip (as .order)
+        $zip = new ZipArchive();
+        $filename = tempnam($this->tempPath, self::FILE_TYPE);
+        if (!$zip->open($filename, ZipArchive::OVERWRITE)) {
+            throw new PKPassException('Could not open ' . basename($filename) . ' with ZipArchive extension.');
+        }
+        $zip->addFromString('signature', $signature);
+        $zip->addFromString('manifest.json', $manifest);
+        $zip->addFromString(self::PAYLOAD_FILE, $this->json);
+
+        // Add translation dictionary
+        foreach ($this->locales as $language => $strings) {
+            if (!$zip->addEmptyDir($language . '.lproj')) {
+                throw new PKPassException('Could not create ' . $language . '.lproj folder in zip archive.');
+            }
+            $zip->addFromString($language . '.lproj/' . self::FILE_TYPE . '.strings', $strings);
+        }
+
+        foreach ($this->files as $name => $path) {
+            $zip->addFile($path, $name);
+        }
+
+        foreach ($this->remote_file_urls as $name => $url) {
+            $download_file = file_get_contents($url);
+            $zip->addFromString($name, $download_file);
+        }
+
+        foreach ($this->files_content as $name => $content) {
+            $zip->addFromString($name, $content);
+        }
+
+        $zip->close();
+
+        if (!file_exists($filename) || filesize($filename) < 1) {
+            @unlink($filename);
+            throw new PKPassException('Error while creating order.order. Check your ZIP extension.');
+        }
+
+        $content = file_get_contents($filename);
+        unlink($filename);
+
+        return $content;
+    }
+}
diff --git a/src/PKPass.php b/src/PKPass.php
index b8e1e45..f46ade5 100644
--- a/src/PKPass.php
+++ b/src/PKPass.php
@@ -23,6 +23,9 @@
  */
 class PKPass
 {
+    const FILE_TYPE = 'pass';
+    const FILE_EXT = 'pkpass';
+    const MIME_TYPE = 'application/vnd.apple.pkpass';
     /**
      * Holds the path to the certificate.
      * @var string
@@ -55,7 +58,7 @@ class PKPass
 
     /**
      * Holds the JSON payload.
-     * @var object|array
+     * @var string
      */
     protected $json;
 
@@ -312,7 +315,7 @@ public function create($output = false)
 
         // Output pass
         header('Content-Description: File Transfer');
-        header('Content-Type: application/vnd.apple.pkpass');
+        header('Content-Type: ' . self::MIME_TYPE);
         header('Content-Disposition: attachment; filename="' . $this->getName() . '"');
         header('Content-Transfer-Encoding: binary');
         header('Connection: Keep-Alive');
@@ -332,9 +335,9 @@ public function create($output = false)
      */
     public function getName()
     {
-        $name = $this->name ?: 'pass';
+        $name = $this->name ?: self::FILE_TYPE;
         if (!strstr($name, '.')) {
-            $name .= '.pkpass';
+            $name .= '.' . self::FILE_EXT;
         }
 
         return $name;
diff --git a/tests/FinanceOrderTest.php b/tests/FinanceOrderTest.php
new file mode 100644
index 0000000..98296a4
--- /dev/null
+++ b/tests/FinanceOrderTest.php
@@ -0,0 +1,100 @@
+<?php declare(strict_types=1);
+
+use PHPUnit\Framework\TestCase;
+use PKPass\FinanceOrder;
+
+final class FinanceOrderTest extends TestCase
+{
+    private function validateOrder($orer, $expected_files = [])
+    {
+        // basic string validation
+        $this->assertIsString($orer);
+        $this->assertGreaterThan(100, strlen($orer));
+        $this->assertStringContainsString('logo.png', $orer);
+        $this->assertStringContainsString('ws03-xs-red.jpg', $orer);
+        $this->assertStringContainsString('manifest.json', $orer);
+
+        // try to read the ZIP file
+        $temp_name = tempnam(sys_get_temp_dir(), 'pkpass');
+        file_put_contents($temp_name, $orer);
+        $zip = new ZipArchive();
+        $res = $zip->open($temp_name);
+        $this->assertTrue($res, 'Invalid ZIP file.');
+        $this->assertEquals(count($expected_files), $zip->numFiles);
+
+        // extract zip to temp dir
+        $temp_dir = $temp_name . '_dir';
+        mkdir($temp_dir);
+        $zip->extractTo($temp_dir);
+        $zip->close();
+        echo $temp_dir;
+        foreach ($expected_files as $file) {
+            $this->assertFileExists($temp_dir . DIRECTORY_SEPARATOR . $file);
+        }
+    }
+
+    public function testBasicGeneration()
+    {
+        $pass = new FinanceOrder(__DIR__ . '/fixtures/example-certificate.p12', 'password');
+        $pass->setData([
+            "createdAt" => "2024-02-01T19:45:50+00:00",
+            "merchant" => [
+                "displayName" => "Luma",
+                "merchantIdentifier" => "merchant.com.pkpass.unit-test",
+                "url" => "https://demo-store.test/",
+                'logo' => 'logo.png',
+            ],
+            "orderIdentifier" => "1",
+            "orderManagementURL" => "https://demo-store.test/sales/order/view",
+            'orderNumber' => '#000000001',
+            "orderType" => "ecommerce",
+            "orderTypeIdentifier" => "order.com.pkpass.unit-test",
+            'payment' => [
+                'summaryItems' => [
+                    [
+                        'label' => 'Shipping & Handling',
+                        'value' => [
+                            'amount' => '5.00',
+                            'currency' => 'USD',
+                        ]
+                    ],
+                ],
+                'total' => [
+                    'amount' => '36.39',
+                    'currency' => 'USB',
+                ],
+                'status' => 'paid'
+            ],
+            "status" => "open",
+            "updatedAt" => "2024-02-01T19:45:50+00:00",
+            'customer' => [
+                'emailAddress' => 'roni_cost@example.com',
+                'familyName' => 'Veronica',
+                'givenName' => 'Costello',
+            ],
+            'lineItems' => [
+                [
+                    'image' => 'ws03-xs-red.jpg',
+                    'price' => [
+                        'amount' => '31.39',
+                        'currency' => 'USD',
+                    ],
+                    'quantity' => 1,
+                    'title' => 'Iris Workout Top',
+                    'sku' => 'WS03-XS-Red',
+                ],
+            ],
+            "schemaVersion" => 1,
+        ]);
+        $pass->addFile(__DIR__ . '/fixtures/order/logo.png');
+        $pass->addFile(__DIR__ . '/fixtures/order/ws03-xs-red.jpg');
+        $value = $pass->create();
+        $this->validateOrder($value, [
+            'logo.png',
+            'ws03-xs-red.jpg',
+            'manifest.json',
+            'order.json',
+            'signature',
+        ]);
+    }
+}
\ No newline at end of file
diff --git a/tests/fixtures/order/logo.png b/tests/fixtures/order/logo.png
new file mode 100644
index 0000000..9841d93
Binary files /dev/null and b/tests/fixtures/order/logo.png differ
diff --git a/tests/fixtures/order/ws03-xs-red.jpg b/tests/fixtures/order/ws03-xs-red.jpg
new file mode 100644
index 0000000..972fbe5
Binary files /dev/null and b/tests/fixtures/order/ws03-xs-red.jpg differ