Description: It is this writing pen features that is very soft and comfortable to hold, making your hands not easy to feel tired. What this writing pen can offer you is that it has a flower on the top that can change colors when exposed to sunlight. It is made of silicone and TPR, which is very soft and eco-friendly. The length of this pen is 16.4cm. School, Office, Home are suitable places for this pen to use. Item Name: Gel Pen Material: Silicone,TPR Features: Funny, Photochromic, Gorgeous Color Changing: Random Color Changing Pen Nib: 0.38mm Size Details: Length: 16.4cm/6.46" (Approx.) Notes: All the oringinal color of the head flower you received is white, and they will change into other random color once exposing to sunlight. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 3 x Gel Pen