diff --git a/ai-wozek/classes.py b/ai-wozek/classes.py
new file mode 100644
index 0000000..1bdddac
--- /dev/null
+++ b/ai-wozek/classes.py
@@ -0,0 +1,47 @@
+
+
+class Cargo:
+    def __init__(self, name, category, size, weight):
+        self.name = name
+        self.size = size
+        self.weight = weight
+        self.category = category
+
+
+class Clothes(Cargo):
+    def __init__(self, name, size, weight, fragility):
+        super().__init__(name,"clothes", size, weight)
+        self.fragility = fragility
+
+class NuclearWaste(Cargo):
+    def __init__(self, name, size, weight, exp_date, toxicity):
+        super().__init__(name,"nuclear_waste" ,size, weight)
+        self.exp_date = exp_date
+        self.toxicity = toxicity
+
+class Fruit(Cargo):
+    def __init__(self, name ,size, weight, exp_date):
+        super().__init__(name,"fruit" ,size, weight)
+        self.exp_date = exp_date
+
+class Carparts(Cargo):
+    def __init__(self, name ,size, weight):
+        super().__init__(name,"car_parts" ,size, weight)
+
+class Forklift:
+    def __init__(self, model):
+        self.model = model
+
+class Shelf:
+    def __init__(self, category):
+        self.category = category
+        self.items = []
+
+    def add_item(self, item):
+        if isinstance(item, Cargo) and item.category == self.category:
+            self.items.append(item)
+        else:
+            print(f"Can't add: {item.name}. Shelf is for: {self.category}")
+
+
+
diff --git a/ai-wozek/wozek.py b/ai-wozek/wozek.py
index b8cde9a..9b5621b 100644
--- a/ai-wozek/wozek.py
+++ b/ai-wozek/wozek.py
@@ -3,6 +3,7 @@ import sys
 import random
 import os
 import time
+from classes import *
 
 class Node():
     def __init__(self,position,rotation,action,parent):