Designed to be the perfect all-around fineliner, the Stabilo Sensor is packed with handy features for writing and drawing. Its micro-cushioned felt tip provides a comfortable writing experience. The tip is encased in a metal sleeve, which reinforces the tip, increases its lifespan, and makes the pen suitable for use with rulers and stencils. No matter how much pressure you write or draw with, the reinforced tip adapts to provide smooth and consistent performance without bending, breaking, or fraying. The pen's cap is ventilated and posts securely on the back of the pen.