The differences are they do not have a clear barrel like the ones shown and they don't write as smooth
345588
To let other people know, the pens you will get are not the pens shown.  The differences are they do not have a clear barrel like the ones shown and they don't write as smooth.  I purposely ordered these here because I really like these particular pens, so needless to say I was disappointed not to get what I ordered.  They did give me a partial refund of 1.60.
2131765
We have other foam letters that someone gave us years ago with my first son, but I haven't been able to find them again, so I purchased these.  These letters are fine and get the job done, but they're so bubbly in their shape.  I wish they were a little more of a standard letter shape as it's a little confusing to early readers.  For example, the M really doesn't look like a traditional M and with my 5 year old still learning how to write his letters well and sight read, the shapes make it more difficult than it should be.

They're also larger than the letters we used to have, which make them heavier if you're trying to use them to stick to the bathtub sides to spell out words during bath time, like we do.  They tend to slide down because of their weight.

This was an okay purchase and, like I said, they serve their purpose, but because we've had a better version of these, I'm a little disappointed that they aren't as great.
4395088
These don't draw very well, however, they also don't break easily.
1046763
The item description states these are the clear barrel pens, but what arrives is the solid grey barrels.  If you don't care about them being clear or grey then go ahead and buy these here, but if you need the clear barrels, don't buy these from amazon.  After complaining the item description was wrong they tried to make amends by sending more of the wrong product as replacement which resulted in an even worse situation. The good news is that they took them back in then end.

Update: apparently now the description has been changed to match the product.
1353797
The supposed Mont Black rollerball refill ink cartridges I received from the seller do not have all the markings that the original Mont Blanc rollerball ink cartridges that came with my pen and the ink cartridges I purchased from Mont Blanc boutique have.
3341684
I bought some of these to replace some that I bought about a year ago that were wearing thin.  These are not nearly as smooth as the original ones.
4572095
Second one I've bought, ink doesn't write smoothly like other muji pens, label is different from pictures, no refund even though item was bought through Prime, disappointing for 12 dollars
1057409
These are decent marbles but in all honestly they look very little like the ones in the picture. They are not a clear blue and more cloudy. In the end they served the purpose I needed them for but for the price I thought they may be closer to what they were advertised as.
1916413
a nice item that you can write with precision
but..it's not as smooth as made in USA products (but they don't make as fine tip as Asians)
3617912
They have a thin coating to prevent from sticking together, but that also adds to them tasting different and having a different texture than regular Starbursts. They don't taste as good as the full sized ones. They still taste OK, but I would rather buy the originals. Most likely won't be buying these again.
6262
They print in slightly off colors as compared with the cannon. They install the same so I will see how it goes
4701037
I have really liked the Uni-Ball Pens since they were first introduced and they are all I use when I need a pen. These are very classy looking with a subtle design on each pen, however, the writing is not as good as other Uni-Balls I have purchased. The smoothness is missing and when writing a word there are little blank spaces where the ink skips. Personally, I don't like going back over what I have written to correct the missing ink because I usually make a mess of it. I also had the pleasure of filling out some very important forms that were front and back. The ink bled through so badly that you could hardly read what I wrote. Unfortunately, there was not an option to get another blank copy to redo the forms with a non-bleeding pen so I had to send them in as they were and they were difficult to read.

My 2-star rating is a reflection of the pen's ability to get the job done. If I have to go back over every word I write to fill in skipping ink, it is simply not worth it and I would not re-purchase.
3970627
More ink, smoother writing, more consistent writing than G2. These have more of a straight barrel shaft (compared to the tapered G2 shaft), which makes writing less comfortable than G2's ergonomic design. Other than this, the Zebras win out. One thing I'll be looking for is consistency over time. I've been very frustrated with the multi-colored G2's failing early in their life even though there is plenty of ink left. One addition is that the most recent pack I received came with a purple pen instead of the orange.
3545311
The ink and colors are very dark. When one thinks of highlighters, the colors are light enough to see the writing underneath... these are not like that.
2264382
I had previously purchased just the chrome version of this pen and liked it so much I wanted more.  I was a little less impressed when these arrived as they weren't writing as smoothly as the original one I bought.  However, I have to say that is not the case anymore.  I'm not sure if there was some sort of protective coating on the tips that prevented a smooth flow or something else, but the skipping has stopped after giving it a good workout over several different grades of paper and the writing is very crisp now.  So, if you do buy this and aren't satisfied at first just give them a good workout.  They are really beautiful pens and I like the weight of them.
401346
I love the colors and price of these pens but they don't write as neatly or smoothly as I like.  Also, the grips on these pens slide around and rip on the edges after you've used them a while.  I've started buying Inkjoy 500 RT pens and Pilot G-2 07 instead of these.
2699190
These were OK but not as good as the Pentel Energel, which I will be buying from now on.  Smooth writing though.