This is the perfect sized pen light because it fits comfortably in shirt or coat pockets. The sturdy metal clip accommodates thick clothing. The flashlight's size is perfect to hold for extended periods and the focus beam directs light exactly where you need it. Pushbutton on/off is conveniently located at the base of the light. The LitezAll 350 Pen Light is designed for durability, dependability and portability as an EDC light.