An Obsessive Focus on UX: Pilot's Pressure-Regulating Kire-Na Highlighter

5/29/2026 at 1:12:21 PM

Japanese overdesign is not only about removing inconveniences, it's also about bringing a bit (or even a lot) of joy into using seemingly mundane products - just like this highlighter. Just knowing that a lot of thought went into the product to make it as good as it can be without making it a luxury item is something that elates me whenever I use something like this.

Another good example is Japanese cling wrap, which is just so much better than everything I've seen in western supermarkets.

by Cockbrand

5/29/2026 at 2:39:18 PM

> Japanese cling wrap

Careful with this one. As I understand it, most consumer cling wrap in western markets is polyethylene film, which is made without plasticizers. But Japanese cling wrap (and the stuff at Costco) is plasticized PVC film, and those plasticizers may well be soluble in your food. The market is supposedly shifting toward safer plasticizers, but I personally would rather not place soft, plasticized plastics in prolonged, direct contact with my food.

by amluto

5/29/2026 at 4:36:09 PM

I watched a video about Japanese cling wrap, and it showed the box has a plastic lip on the part of the lid that's used to cut the film at the desired length. Here in Europe all the rolls I've ever bought came in a paper box which just had a serrated paper edge that gets dull after using it three times (which is not surprising because paper bends easily). I think that probably makes a bigger difference than the material itself. Eventually I got a plastic case for the wraps and I just throw away the cardboard box, but I know most people here use the paper box and would probably be amazed if they tried the Japanese one.

by dandellion

5/29/2026 at 8:56:00 PM

Turkey: Large size boxes comes with a slide cutter with a metal razor blade.

by bayindirh

5/29/2026 at 6:11:11 PM

UK: ours usually have a thin serrated metal edge.

by tengwar2

5/29/2026 at 6:53:59 PM

Odd, I’ve had the opposite experience… back home in Australia the boxes came with metal edges, but here in the UK (Scotland) they all seem to be plain cardboard. If the metal ones are sold somewhere I’d be very interested to know where I could find them!

by bradrn

5/29/2026 at 6:58:16 PM

I just own a standard catering one and it always bemuses me how people suffer with the shit sold in supermarkets

by Ntrails

5/29/2026 at 1:47:03 PM

From what I've seen, the Japanese have a very different approach to design. The beauty is always so understated. It's not announced, but discovered by discerning eyes. You see it in their pottery, joinery, clothing, paper, architecture, etc. A lot of their stuff looks really bland, but when it's stuff you care about, you really feel the thought and craftsmanship that went into it.

by nicbou

5/29/2026 at 2:04:28 PM

It also brings me memories of Japanese calligraphic art and the careful use of various sizes, shapes and textures for brushes, where even the smudges and splatters are deliberate.

by rbanffy

5/29/2026 at 1:32:45 PM

As a fan of Pilot's fountain pens, I've come to rely on their aim for quality. Their pens and inks just work.

One of the things many fountain pen users complain about with Pilot is that their converters don't work like other fountain pens. But in each case there are specific design choices that shine. Their cartridges have wider openings than standard ink cartridges. In part this makes their cartridges and converters proprietary, but the wider mouth and the hinged lid on the cartridges makes for better ink flow.

The CON-40, often criticized for low ink capacity, fits their smaller pens, and has small agitators in the converter, allowing every last drop to get to the feed, and making cleaning easier. The CON-70, generally liked for its capacity, also has a unique feature of a metal tube that runs the length of the converter. This tube, which could have simply been a rod to hold the rubber stopper that enables pump filling, is a tube so that you can actually hold a blunt syringe to the tube mouth and squirt water straight to the back of the converter allowing you to clean it out properly.

I love using well-designed products, and their writing instruments are among my favorites.

by slowmovintarget

5/29/2026 at 2:06:18 PM

I have used their mechanical pencils throughout college. Absolutely perfect engineering.

by rbanffy

5/29/2026 at 8:02:06 PM

I agree. Their fountain pens and inks are just rock solid, and I've practically never run into an issue with any of mine. I wish more companies would obsess over the details like Pilot does.

by techwizrd

5/29/2026 at 2:44:03 PM

I think something that's probably under appreciated if you don't read/write Kanji– bad penmanship is incredibly hard to read due to the complexity of the characters. Good penmanship is extremely valued in Japan, so that need for precision tends to bleed over into an overarching valuing of stationary and related accessories.

by iand675

5/29/2026 at 7:03:55 PM

This is why Japanese pens are the best.

by minnowguy

5/29/2026 at 6:49:48 PM

Is handwriting really that important now that you can cheaply print anything?

by paweladamczuk

5/30/2026 at 1:09:50 AM

...but they aren't the only ones who use logographs and those other places don't have the same legacy...

by mc32

5/29/2026 at 6:37:46 PM

> They called it KIRE-NA, meaning "clean" in Japanese.

KIRE-NA is a phonemic translation of "clean" into Japanese, which doesn't have a distinct "l" sound and where most Katakana syllables are a consonant followed by a vowel. Although the letter ン (n) is an exception so I don't know why they didn't call it KIREEN (キレーン).

by dreamcompiler

5/29/2026 at 2:43:28 PM

That kind of innovation is not always for the best. As an example, after hearing so much praise about the kuru-toga mechanical pencil, which rotates the lead as you write so it stays sharp longer, I went and bought one. I hate it. The rotation mechanism means the lead doesn't stay in place but has a weird "give" to it, which I notice every time I raise the pen and put it back to the paper. It's very small, a fraction of a millimeter, but it is noticeable and distracting. For me, the cure is a lot worse than the disease. I went back to my 10-year-old Pentel P205 which is stable as a rock.

by apricot

5/29/2026 at 3:32:30 PM

Ah another website that doesn’t actually want me to read its content:

https://imagehost.ing/Y-WuTY4-yiI73GfCWjz2Q.png

I wonder what the principles of ‘obsessive Japanese design’ would have to say about this.

by mock-possum

5/30/2026 at 8:08:22 PM

Thanks for highlighting this story.

by jeffrallen

5/29/2026 at 2:49:26 PM

[flagged]

by wellactchully