Felix StretchWrite Stylus (2 pack) With its clever design, StretchWrite adds a comfortable soft-grip to your pen or pencil while instantly turning them into a high quality stylus. A Comfort Fit. Simply pull StretchWrite over your pen or pencil for an incredibly comfortable writing experience. Each order comes with 2 StretchWrite in two different colors. Fits over most writing instruments. Works with all touch-sensitive screens. Stretch over your pen or pencil, inserting the writing tip through the StretchWrite end with a hole.