Comfortable and effective at repositioning pencil
I tried several grips with my son who has low tone muscles and is hyper flexible.  This was just the thing he needed to fix his grip.  His hand muscles are not strong, so he was hyper extending his thumb which in turn caused the pencil to point away from his body, resulting in a funky grip.  Now that the pencil is positioned properly his thumb gently bends like it should and his writing has improved.  He had a little muscle fatigue at the beginning but it faded quickly.  Wish we had figured this out a year earlier.
Rating: 5 stars