They have a unique curve which not only makes it comfortable to write but does not cause your hand to drag across the paper you're writing

For me, the curve of this pen does not work as well as the yoropen.

While this probably improves my penmanship it does not improve my efficiency.

What better way to start than with pens (bec lefties often have messy writing, which he does, but shhhhh!

The ink is also nice; it does not run or smudge on paper

Perhaps if the pen wrote smoothly rather than as rough as it does, finding a comfortable grip wouldn't be so difficult.

While this probably improves my penmanship it does not improve my efficiency.

My son loves these pens how ever the black does not work very well which was very dissapointing