diff --git a/schemas/pen.py b/schemas/pen.py
new file mode 100644
index 0000000..9984b29
--- /dev/null
+++ b/schemas/pen.py
@@ -0,0 +1,40 @@
+from pydantic import BaseModel, Field
+from typing import Optional
+
+class PenBase(BaseModel):
+    name: str = Field(..., min_length=1, max_length=100, description="Name of the pen")
+    brand: str = Field(..., min_length=1, max_length=50, description="Brand of the pen")
+    color: str = Field(..., min_length=1, max_length=30, description="Color of the pen")
+    price: int = Field(..., gt=0, description="Price of the pen in cents")
+    in_stock: bool = Field(default=True, description="Whether the pen is in stock")
+    description: Optional[str] = Field(None, max_length=500, description="Optional description of the pen")
+
+class PenCreate(PenBase):
+    class Config:
+        schema_extra = {
+            "example": {
+                "name": "Ballpoint Pen",
+                "brand": "Parker",
+                "color": "Blue",
+                "price": 499,
+                "in_stock": True,
+                "description": "Smooth writing ballpoint pen with medium tip"
+            }
+        }
+
+class Pen(PenBase):
+    id: int = Field(..., description="Unique identifier for the pen")
+
+    class Config:
+        orm_mode = True
+        schema_extra = {
+            "example": {
+                "id": 1,
+                "name": "Ballpoint Pen",
+                "brand": "Parker",
+                "color": "Blue",
+                "price": 499,
+                "in_stock": True,
+                "description": "Smooth writing ballpoint pen with medium tip"
+            }
+        }
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