Four-color Portable Ball Pen Pen, the Upper End of the Pen has a Mountaineering Buckle, Hanging & Holding Are Very Convenient, Can be Used to Hang Keys, But Also Can Hang the Pen Anywhere, Such as Bags, Shirt Pockets, Belts & So On. the Ball Pen Pen is Made of Abs Plastic & is Very Lightweight, So It is Easy to Carry. a Ball Pen Pen Can Write Four Colors, Namely Red, Blue, Black, Green, High Quality Ink, Writing Smooth & Fluent. Ball Pen Pen Beautiful Shape, Streamlined Pen Body, Appropriate Thickness, Long Time Writing Hands Will Not be Tired. Print the Brand Trademark on the Pen Allows More People to Enter the Brand, Understand the Brand, & Eventually Become Loyal Users of the Brand