Pentel Energel Infree Review: 10 Colors In A Clear Body

Pentel Energel Infree is a cheap but high-quality pen that is popular for its wide selection of colors. Here is an in-depth review of its appeal, detailed features, and design.

Basic Features of Pentel Energel Infree

Length147mm (5.79 inches)
Diameter (Ø)11mm (0.43 inches)
MechanismKnock Type
Color Variations10 colors available
Pen Tip0.4 / 0.5 / 0.7mm
PriceJP ¥220 (approx. US $2)

Refill Color Variation

Refills are available in a total of 10 colors. While typical ballpoint pens are available in black, red, and blue colors. It is an excellent point that they offer such a variety of options.

Blue Black
Rough Gray
Turquoise Blue


The pen nib is designed to come out with a knock type. And it has a crystal clear body on top with a rubber grip on the bottom. The body itself is entirely transparent, regardless of the ink color, so that the inside ink color can be seen through it. There are no unnecessary decorations, and the design emphasizes the ink colors.

pentel energel infree in black and blue black
Grip part of pentel energel infree
Pentl ENERGEL logo on pentel energel infree
inner structure of pentel energel infree

Incidentally, Energel also has a high-end line Pentel Energel Philography. The heavy brass metal body with a Matte finish looks gorgeous.

comparison with pentel energel philography


Energel Ink

The ink is Pentel’s original “Energel Ink”. It is a water-based gel ink that is very smooth to write with.
The nib has a unique shape, with only the pen tip sticking out in a long, thin line. So we can see our handwriting even while we are writing.

pen tip of pentel energel infree

Writing Test

Here is a writing test comparing Pentel Energel Infree with several other companies’ ballpoint pens on LIFE Noble Notebook paper.

writing test of different pens on paper
No ghosting for writing test

The writing is indeed very smooth, and the nib does not get stuck while writing. The color is also quite good, and each letter is vibrant and easy to read. However, the pen tip with a thickness of 0.4mm is a little less smooth. So if you are looking for a comfortable writing experience, I would recommend 0.5 or 0.7mm thickness.

pen tiip thickness comparison of energel ink

According to Pentel, Energel Ink dries very quickly even though it is gel ink. But compared to the other oil-based ballpoint pens, we will notice a little bit of smudge when we touch the ink right after writing.

smudge of energel ink on a paper

Things I Noticed

Durability of Grip

The grip part gets dirty quickly and is not suitable for long-term use. However, the price is about $2 per unit. So I think the quality is worth the price.

Ink Quantity

To ensure a smooth writing experience, the ink output is quite a lot. In other words, the ink consumption is relatively high. This is probably why the refills are thicker than the ordinary ballpoint pen refills.

refill size comparison between pentel energel infree and jetstream pen
Right: Energel Infree


The Pentel Energel Infree is also compatible with some other companies’ ballpoint pens made in Japan. We can replace it with the refill of our choice if the size fits. After a quick test, I found that Uni JETSTREAM and Zebra SARARA dry refills fit perfectly.

Where Can We Get Pentel Energel Infree?

I have picked out a few online stores below that sell Pentel Energel Infree with international shipping.

As far as I can tell, doesn’t sell the product per uni but rather in sets of five. On the other hand, Amazon Japan offers Pentel Energel Infree individually at a price even lower than the regular price. See below for instructions on how to order via Amazon Japan using Amazon Global services

Overall Score

radar chart of overall score

Pentel Energel Infree is a gel ink ballpoint pen with a crystal clear body and vibrant & colorful ink. We can write very smoothly with it, and it is definitely worth trying. But as it is reasonably priced, it doesn’t have enough durability for long-term use. But you may buy refills in various colors and use them according to your mood.


5 thoughts on “Pentel Energel Infree Review: 10 Colors In A Clear Body

  • Hairstyles

    Woah! I’m really digging the template/theme of this blog. It’s simple, yet effective. A lot of times it’s tough to get that “perfect balance” between user friendliness and visual appeal. I must say you have done a excellent job with this. Also, the blog loads super fast for me on Firefox. Excellent Blog!

  • Fashion Styles

    Magnificent site. Plenty of useful info here. I抦 sending it to a few pals ans also sharing in delicious. And of course, thanks for your sweat!

  • Reuben Datamphay

    I have been exploring for a bit for any high quality articles or blog posts on this kind of house . Exploring in Yahoo I ultimately stumbled upon this site. Studying this info So i’m happy to express that I have an incredibly just right uncanny feeling I came upon exactly what I needed. I so much no doubt will make certain to don’t disregard this site and provides it a glance a continuing.


Leave a Reply

Your email address will not be published. Required fields are marked *