diff --git a/data/class/helper/SC_Helper_Purchase.php b/data/class/helper/SC_Helper_Purchase.php
index 2b7aff1384..8f2d1be7c9 100644
--- a/data/class/helper/SC_Helper_Purchase.php
+++ b/data/class/helper/SC_Helper_Purchase.php
@@ -403,6 +403,9 @@ public function setShipmentItemTemp($shipping_id, $product_class_id, $quantity)
 
         if (empty($arrItems['productsClass'])) {
             $product = &$objProduct->getDetailAndProductsClass($product_class_id);
+            // セッション変数のデータ量を抑制するため、一部の商品情報を切り捨てる
+            $objCartSession = new SC_CartSession_Ex();
+            $objCartSession->adjustSessionProductsClass($product);
             $arrItems['productsClass'] = $product;
         }
         $arrItems['price'] = $arrItems['productsClass']['price02'];
diff --git a/tests/class/helper/SC_Helper_Purchase/SC_Helper_Purchase_setShipmentItemTempTest.php b/tests/class/helper/SC_Helper_Purchase/SC_Helper_Purchase_setShipmentItemTempTest.php
index fb0c8016ab..2bccb14dc0 100644
--- a/tests/class/helper/SC_Helper_Purchase/SC_Helper_Purchase_setShipmentItemTempTest.php
+++ b/tests/class/helper/SC_Helper_Purchase/SC_Helper_Purchase_setShipmentItemTempTest.php
@@ -49,8 +49,8 @@ protected function setUp(): void
         $this->productsClass = $this->objQuery->getRow('*', 'dtb_products_class', 'product_id = ?', [$this->product_id]);
 
         $_SESSION['shipping']['1001']['shipment_item'] = [
-      '1001' => ['productsClass' => ['price02' => 9000]],
-    ];
+            '1001' => ['productsClass' => ['price02' => 9000]],
+        ];
         $this->helper = new SC_Helper_Purchase_Ex();
     }
 
@@ -65,36 +65,52 @@ public function testSetShipmentItemTemp製品情報が既に存在する場合
         $this->helper->setShipmentItemTemp('1001', '1001', 10);
 
         $this->expected = [
-      'shipping_id' => '1001',
-      'product_class_id' => '1001',
-      'quantity' => 10,
-      'price' => 9000,
-      'total_inctax' => SC_Helper_TaxRule_Ex::sfCalcIncTax(90000),
-      'productsClass' => ['price02' => 9000],
-    ];
+            'shipping_id' => '1001',
+            'product_class_id' => '1001',
+            'quantity' => 10,
+            'price' => 9000,
+            'total_inctax' => SC_Helper_TaxRule_Ex::sfCalcIncTax(90000),
+            'productsClass' => ['price02' => 9000],
+        ];
         $this->actual = $_SESSION['shipping']['1001']['shipment_item']['1001'];
 
         $this->verify();
     }
 
-    public function testSetShipmentItemTemp製品情報が存在しない場合DBから取得した値が反映される()
+    public function testSetShipmentItemTemp製品情報が存在しない場合DBから取得した値が反映され不要な情報は削除される()
     {
         $quantity = 10;
         $this->helper->setShipmentItemTemp('1001', $this->productsClass['product_class_id'], $quantity);
 
+        $objProduct = new SC_Product_Ex();
+        $arrProduct = $objProduct->getDetailAndProductsClass($this->productsClass['product_class_id']);
         $this->expected = [
-      'shipping_id' => '1001',
-      'product_class_id' => $this->productsClass['product_class_id'],
-      'quantity' => $quantity,
-      'price' => $this->productsClass['price02'],
-      'total_inctax' => SC_Helper_TaxRule_Ex::sfCalcIncTax($this->productsClass['price02']) * $quantity,
-    ];
+            'shipping_id' => '1001',
+            'product_class_id' => $this->productsClass['product_class_id'],
+            'quantity' => $quantity,
+            'price' => $this->productsClass['price02'],
+            'total_inctax' => SC_Helper_TaxRule_Ex::sfCalcIncTax($this->productsClass['price02']) * $quantity,
+            'productsClass' => [
+                'product_id' => $arrProduct['product_id'],
+                'product_class_id' => $arrProduct['product_class_id'],
+                'name' => $arrProduct['name'],
+                'price02' => $arrProduct['price02'],
+                'point_rate' => $arrProduct['point_rate'],
+                'main_list_image' => $arrProduct['main_list_image'],
+                'main_image' => $arrProduct['main_image'],
+                'product_code' => $arrProduct['product_code'],
+                'stock' => $arrProduct['stock'],
+                'stock_unlimited' => $arrProduct['stock_unlimited'],
+                'sale_limit' => $arrProduct['sale_limit'],
+                'class_name1' => $arrProduct['class_name1'],
+                'classcategory_name1' => $arrProduct['classcategory_name1'],
+                'class_name2' => $arrProduct['class_name2'],
+                'classcategory_name2' => $arrProduct['classcategory_name2'],
+            ],
+        ];
         $result = $_SESSION['shipping']['1001']['shipment_item'][$this->productsClass['product_class_id']];
-        unset($result['productsClass']);
         $this->actual = $result;
-
         $this->verify();
     }
-
     // ////////////////////////////////////////
 }