Pilot FriXion Ball Knock Retractable Gel Ink Pen - 0.5 mm - 10 Color Set

I've been waiting for retractable FriXions ever since the 0.7mm FriXion gel pens came out! I love these, the colors are beautiful, and I love that they retract with the clip, so that they don't keep retracting while you erase!

I really wish that this company would make multi-pens for these so we could just swap out ink and only have to toe around one pen. other than that, i absolutely LOVE these!!!

Got all my pens yesterday. Simply love my frixion pens. All the colors are simply great. Love the smoothness with which I can write with these.

This a GREAT pen! I practically use it everyday in school and I LOVE it!!! i only wish it had a little more ink :( but other than that they are amazing!1

These pens are ULTRA smooth. The pen looks nice and feels good in the hand. They erase well, especially on good quality paper (magazine paper warps slightly). The colors are ok, but a bit washed out. I can barely tell the difference between orange and red, and the black/blue-black/blue pens are VERY subtle variations. I'm using these pens to write in test-prep books and they work great, but I can only really assign 6/10 colors to different resources, because there's no way I'd be able to tell the difference between blue and blue-black or red and orange notes side by side written in a book. So... I'm addicted enough that I don't want to wait for a return/reorder, but if I were to do it again, I'd only order the colors I need and save myself $13.

Oh, and the ink WILL disappear in very hot conditions, but my test sheet (placed under a hair dryer) came back to near-normal when placed in the freezer. Totally legible, though a little lighter. That's good enough for me. For archival purposes, these pens are not a great idea, but this is perfect for my book annotations, day planner, etc. FYI: friction-erased bits don't come back in the freezer.