As a graduate student with an incorrect grip on my pen I have long experienced hand pain while writing. This grip is my #1 go to grip, as it relieves pressure on my hand without forcing it into an uncomfortable position. This along with The Jumbo Grip are my top suggestions for teens and adults, and both fit easily on most pens.
The Bumpy Grip by The Pencil Grip is lightweight and slimmer than other grips for easier writing. Provides excellent tactile feedback! Encourages proper form, while relieving fatigue.
Comes in a variety of semi-translucent colors. Please specify color preference in order comments.