diff --git a/src/CartManager/AbstractCart.php b/src/CartManager/AbstractCart.php
index 4eb7213a..87bd9cf0 100644
--- a/src/CartManager/AbstractCart.php
+++ b/src/CartManager/AbstractCart.php
@@ -84,13 +84,13 @@ abstract protected function getCartCheckoutDataClassName(): string;
      * @param int $count
      * @param string|null $itemKey
      * @param bool $replace
-     * @param array $params
+     * @param array $customProperties
      * @param AbstractSetProductEntry[] $subProducts
      * @param string|null $comment
      *
      * @return string
      */
-    public function addItem(CheckoutableInterface $product, int $count, string $itemKey = null, bool $replace = false, array $params = [], array $subProducts = [], string $comment = null): string
+    public function addItem(CheckoutableInterface $product, int $count, string $itemKey = null, bool $replace = false, array $customProperties = [], array $subProducts = [], string $comment = null): string
     {
         if (empty($itemKey)) {
             $itemKey = (string) $product->getId();
@@ -100,7 +100,7 @@ public function addItem(CheckoutableInterface $product, int $count, string $item
             }
         }
 
-        return $this->updateItem($itemKey, $product, $count, $replace, $params, $subProducts, $comment);
+        return $this->updateItem($itemKey, $product, $count, $replace, $customProperties, $subProducts, $comment);
     }
 
     /**
@@ -108,13 +108,13 @@ public function addItem(CheckoutableInterface $product, int $count, string $item
      * @param CheckoutableInterface&Concrete $product
      * @param int $count
      * @param bool $replace
-     * @param array $params
+     * @param array $customProperties
      * @param AbstractSetProductEntry[] $subProducts
      * @param string|null $comment
      *
      * @return string
      */
-    public function updateItem(string $itemKey, CheckoutableInterface $product, int $count, bool $replace = false, array $params = [], array $subProducts = [], string $comment = null): string
+    public function updateItem(string $itemKey, CheckoutableInterface $product, int $count, bool $replace = false, array $customProperties = [], array $subProducts = [], string $comment = null): string
     {
         //load items first in order to lazyload items (if they are lazy loaded)
         $this->getItems();
@@ -158,6 +158,8 @@ public function updateItem(string $itemKey, CheckoutableInterface $product, int
             $item->setSubItems($subItems);
         }
 
+        $item->setCustomProperties($customProperties);
+
         $this->items[$itemKey] = $item;
 
         // trigger cart has been modified
diff --git a/src/CartManager/AbstractCartItem.php b/src/CartManager/AbstractCartItem.php
index 883e72fa..d0d7f2c1 100644
--- a/src/CartManager/AbstractCartItem.php
+++ b/src/CartManager/AbstractCartItem.php
@@ -57,6 +57,8 @@ abstract class AbstractCartItem extends \Pimcore\Model\AbstractModel implements
      */
     protected ?int $addedDateTimestamp = null;
 
+    protected array $customProperties = [];
+
     public function __construct()
     {
         $this->setAddedDate(new \DateTime());
@@ -298,4 +300,23 @@ public function setIsLoading(bool $isLoading): void
     {
         $this->isLoading = $isLoading;
     }
+
+    /**
+     * Sets custom properties to CartItem when provided in AbstractCart::addItem
+     *
+     * @param array $customProperties
+     * @return void
+     */
+    public function setCustomProperties(array $customProperties): void
+    {
+        $this->customProperties = $customProperties;
+    }
+
+    /**
+     * @return array
+     */
+    public function getCustomProperties(): array
+    {
+        return $this->customProperties;
+    }
 }
diff --git a/src/CartManager/CartInterface.php b/src/CartManager/CartInterface.php
index 9bb17f1b..5c502797 100644
--- a/src/CartManager/CartInterface.php
+++ b/src/CartManager/CartInterface.php
@@ -70,26 +70,26 @@ public function getGiftItem(string $itemKey): ?CartItemInterface;
      * @param int $count
      * @param string|null $itemKey
      * @param bool $replace replace if item with same key exists
-     * @param array $params optional additional item information
+     * @param array $customProperties optional additional item information
      * @param AbstractSetProductEntry[] $subProducts
      * @param string|null $comment
      *
      * @return string $itemKey
      */
-    public function addItem(CheckoutableInterface $product, int $count, string $itemKey = null, bool $replace = false, array $params = [], array $subProducts = [], string $comment = null): string;
+    public function addItem(CheckoutableInterface $product, int $count, string $itemKey = null, bool $replace = false, array $customProperties = [], array $subProducts = [], string $comment = null): string;
 
     /**
      * @param string $itemKey
      * @param CheckoutableInterface $product
      * @param int $count
      * @param bool $replace replace if item with same key exists
-     * @param array $params optional additional item information
+     * @param array $customProperties optional additional item information
      * @param array $subProducts
      * @param string|null $comment
      *
      * @return string $itemKey
      */
-    public function updateItem(string $itemKey, CheckoutableInterface $product, int $count, bool $replace = false, array $params = [], array $subProducts = [], string $comment = null): string;
+    public function updateItem(string $itemKey, CheckoutableInterface $product, int $count, bool $replace = false, array $customProperties = [], array $subProducts = [], string $comment = null): string;
 
     /**
      * updates count of specific cart item
diff --git a/src/CartManager/CartItemInterface.php b/src/CartManager/CartItemInterface.php
index 2c1c8a62..8232a07c 100644
--- a/src/CartManager/CartItemInterface.php
+++ b/src/CartManager/CartItemInterface.php
@@ -112,4 +112,11 @@ public function setAddedDateTimestamp(int $time): void;
      * @return string
      */
     public function getName(): string;
+
+    /**
+     * @return array
+     */
+    public function getCustomProperties(): array;
+
+    public function setCustomProperties(array $customProperties): void;
 }
diff --git a/src/CartManager/CartManagerInterface.php b/src/CartManager/CartManagerInterface.php
index 97bf4dad..cb984c40 100644
--- a/src/CartManager/CartManagerInterface.php
+++ b/src/CartManager/CartManagerInterface.php
@@ -40,7 +40,7 @@ public function getCartClassName(): string;
      * @param string|null $key            - optional key of cart where the item should be added to
      * @param string|null $itemKey   - optional item key
      * @param bool $replace          - replace item if same key already exists
-     * @param array $params          - optional addtional item information
+     * @param array $customProperties          - optional additional item information
      * @param AbstractSetProductEntry[] $subProducts
      * @param string|null $comment
      *
@@ -52,7 +52,7 @@ public function addToCart(
         string $key = null,
         string $itemKey = null,
         bool $replace = false,
-        array $params = [],
+        array $customProperties = [],
         array $subProducts = [],
         string $comment = null
     ): string;
diff --git a/src/CartManager/MultiCartManager.php b/src/CartManager/MultiCartManager.php
index bab0c63e..f426da11 100644
--- a/src/CartManager/MultiCartManager.php
+++ b/src/CartManager/MultiCartManager.php
@@ -116,7 +116,7 @@ protected function getAllCartsForCurrentUser(): ?array
      * @param string|null $key
      * @param string|null $itemKey
      * @param bool $replace
-     * @param array $params
+     * @param array $customProperties
      * @param array $subProducts
      * @param string|null $comment
      *
@@ -130,7 +130,7 @@ public function addToCart(
         string $key = null,
         string $itemKey = null,
         bool $replace = false,
-        array $params = [],
+        array $customProperties = [],
         array $subProducts = [],
         string $comment = null
     ): string {
@@ -142,7 +142,7 @@ public function addToCart(
 
         $cart = $this->carts[$key];
 
-        $itemKey = $cart->addItem($product, $count, $itemKey, $replace, $params, $subProducts, $comment);
+        $itemKey = $cart->addItem($product, $count, $itemKey, $replace, $customProperties, $subProducts, $comment);
         $this->save();
 
         return $itemKey;