One reviewer said this, "If you're tired of pencil erasers going 'stale,' not erasing, smudging, and ripping the paper, then buy these

It leaves nothing behind, won't rip your paper when you are vigorously removing angering math work and doesn't fall apart or chunk

They are soft enough to not mar the paper, yet stiff enough to get the job done.

If you're tired of pencil erasers going 'stale,' not erasing, smudging, and ripping the paper, then buy these.

High-quality erasers that never ruin the paper

This fixed my messy papers up

They don't damage the paper, or smudge or anything

And, it does it neatly and efficiently, without smudging or damaging the paper

The paper on them deteriorates rather quickly though

All in all, if you, like me, love having a home office filled with great paper and fountain pens and a variety of bottles of ink, along with notebooks and hole punchers and all the rest, this is the eraser you need to have

they don't rip the paper, and the take every bit of pencil off the paper cleanly

She likes it because she no longer tears the paper when erasing and all the pencil marks are erased.

Don't mess up the paper

It can easily and cleanly erase all the pencil lines and won't damage paper.

It doesn't erase well, and it's not as soft, so it ruins your paper slightly

My pencil eraser was dry and hard and really smudging up my paper

But as for the quality:One reviewer said this, "If you're tired of pencil erasers going 'stale,' not erasing, smudging, and ripping the paper, then buy these

I love great paper and mainly buy Rhodia, Miquelrius, Clairefontaine, and Arc/Circa notebooks

They don't destroy the paper, don't smudge, and effectively remove pencil marking

Doesn't erase nearly as completely as the Faber Castell green dust-free eraser, or the Kokuyo Campus 2B.