Look to be 100% clear, I have been using this pen since I was 9 years old, now I am 18. What have I seen in these 9 YEARS that I have been using them? Unfortunately, the positives are that it is very comfortable and the ink glides, resulting in no pain in my hand when I write, which I constantly experience with Bic pens or any others.... 1 this 2 they produce a very intense color and their inks have a nice smell, resulting in a very nice handwriting. And I have bought it in almost all colors. 3 The eraser at the back is perfect, very smooth erasing and does not leave smudges. Now the negatives are 1 they break somewhat easily if you play with them or if they fall from a height, which is not good and every time in these 9 years when some of them fell and broke, it annoyed me somewhat. 2 They are somewhat expensive, I buy the capped ones for 2.40 and the retractable ones for 3. 4 The ink runs out somewhat quickly because every time I write, after almost 1.5 MONTHS AT MOST, it fades and I have to spend 3 euros every month to buy a pen. Also, the refills save money because they cost 1.5 euros, but unfortunately, they are only available in default blue and not in all colors.