Unique Writing Experience: Battery-operated vibrating feature adds fun and excitement to your writing. Easy to Use: Simple design makes it easy for anyone to enjoy the fun of Dizzy Gels. Variety of Colors: Enjoy a range of colors for all your artistic and writing needs. Bonus Refills: Comes with 8 additional gel refills to keep the creativity flowing. 2-Pack: Includes two vibrant gel pens for sharing or keeping one as a backup.