Обертки к товарам.

AddEventHandler("sale", "OnBeforeBasketAdd", "doAddPropertiesToBasket");

 /** 
 * @param $arFields 
 */ 
function doAddPropertiesToBasket(&$arFields) {     
    $rsElements = CIBlockElement::GetByID($arFields["PRODUCT_ID"]); 
    $arConfig = array( 
     'CODE' => 'ARTICLE', 
     'NAME' => 'Артикул' 
    ); 
     
    if ($obElement = $rsElements->GetNextElement()) { 
     $arProperty = $obElement->GetProperty($arConfig['CODE']); 
      
     $bUpdate = false; 
     if (count($arFields['PROPS']) > 0) { 
      foreach ($arFields['PROPS'] as $iKey => $arProp) { 
          if ($arProp['CODE'] == $arConfig['CODE']) { 
           $arFields['PROPS'][$iKey] = array('NAME' => $arConfig['NAME'], 'CODE' => $arConfig['CODE'], 'VALUE' => $arProperty['VALUE'], 'SORT' => 'ASC'); 
           $bUpdate = true; 
          } 
      } 
     } 
      
     if (!$bUpdate)
      $arFields['PROPS'][] = array('NAME' => $arConfig['NAME'], 'CODE' => $arConfig['CODE'], 'VALUE' => $arProperty['VALUE'], 'SORT' => 'ASC');
    }
}