Choose your perfect colour combination

$71.00

Body colour Lilac
Lid colour Apricot
Body colour Lilac
Lid colour Apricot
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Sustainable Stationery Product of the Year 2026, Stationery Awards, London

Meet the Wren – Write Off: the infinitely refillable pen that gives disposable pens another life. An estimated 9 billion disposable pens are thrown away globally each year. It’s a staggering number. Having spent years creating pens designed to be reused for a lifetime, I couldn't help but feel for these poor little pens – destined to be buried for hundreds of years. It was time to close the loop – to find a way to repurpose them and give them a brand-new life.

Enter the Wren – Write Off, my boldest project to date. Over the past year, we've been working with schools and organisations to intercept stationery waste at the source, preventing it from reaching landfill. This precious plastic is then meticulously separated and sorted to create the wonderful colours you see before you.

Crafted in collaboration with the brilliant Brothers Make, each lid is made by chipping, injection-moulding and hand-finishing the reclaimed plastic – a process that’s more artisan than assembly line. This unique method means every lid is completely one-of-a-kind.

This isn’t just a pen – it’s a small act of rebellion against waste, and a celebration of creativity.

We're on a mission to make choosing refillable options easier, so you can now buy two (or more!) Wren pens and save 10%

Included in the box:

  • The Wren – Write Off in your choice of colours
  • Japanese-made Writing Tip*
  • 3ml Midnight Ink sample
  • Ink Reservoir

*0.3–0.5 depending on pressure

Specifications:

  • Length capped – 80mm
  • Posted (cap on the end of the pen) – 120mm
  • Pen barrel diameter – 13mm
  • Weight – 14g

Full FAQs and a video guide to getting started with your Wren can be found here.

What ink can I use?
The Wren is compatible with all standard Fountain Pen Inks and we have a beautiful range of colours, which are perfect for the Wren and can be found here. Please note the Wren is not suitable for use with our Shimmer Fountain Pen Inks or Calligraphy Inks.

Looking for a waterproof option? We’d suggest our No.60 Pigment Black, Sailor Kiwa-guro or Platinum Carbon inks - we’ve tested both, and they flow beautifully.

Some ink colours can concentrate in the tip, so you may experience a lighter colour after a line or two. This is completely normal and looks quite nice!

How do I store the reservoir and tips?
You can store reservoirs and tips, and change to a different colour using spare reservoirs and my reservoir storage containers.

How long will the tips/ink last?
You can expect the high-quality, Japanese-made tip to last for months of use. We tested a single ink fill in the Wren on a plotter – a device used for precision drawing – and it wrote consistently for 344 metres. That's the equivalent of 50 A4 pages of handwriting!

When the tip eventually dulls, you can find packs of three replacement tips here.

Anything else I should know?
Yes! Each lid is completely unique, made using a one-of-a-kind blend of upcycled plastics. That means colour density and placement will vary from pen to pen. Some are bold and bright, others more subtle – it’s all part of the charm. Think of it as a lucky dip for your desk. No two lids will ever be the same.

Shipping costs are calculated at checkout.

For dispatch times, customs details, and more, please visit our Delivery page. Got a question? Just reach out via our Contact form – we’re here to help!

Here’s the how (and why)

Waste Plastic: Reimagined

Every year, billions of plastic pens are thrown away – we wanted to do things differently. By collecting waste from local schools and organisations, we’ve reimagined what a pen can be: thoughtfully made, built to last, and crafted with care from reclaimed plastic.

Giving waste a second chance

We partner with local schools and organisations to collect used plastic pens and markers – saving them from landfill and starting their journey toward something better.

Prepped with care

In their workshop, the incredible team at Brothers Make meticulously sort, wash, and chip the plastic into colourful flakes – ready for transformation.

Small batch, big impact

Each pen lid is injection moulded, creating one-of-a-kind pieces. Every lid is then finished by hand – it's small batch production done right.

  • 5 stars: 1564 (88%)
  • 4 stars: 119 (7%)
  • 3 stars: 47 (3%)
  • 2 stars: 26 (1%)
  • 1 star: 24 (1%)
Some of the reviews shown are from related products the merchant grouped with this one.
J
Jeremy R.
Wren-Ovation!

I have two Studio pens and three Lumos's from Tom's Studio, so why would I need a Wren? Well why not? After resisting temptation for several months, the Colour Block range finally triggered an impulse purchase.

I am very pleased with my Wren, it's more pocketable than my pocket fountain pen (lighter and less likely to leak too!) and a joy to use. I went for an orange body with an orange top, The colour looks a lot brighter in the product photos, The actual colour is a little less vibrant - closer to tan than any citrus hue - but it's still lovely.

I will definitely consider buying another if they ever release a titanium or unpainted aluminium version.

J
Joanne R.
What an awesome pen

I bought this with hope that it would do what the brochure says, and it has exceeded expectations.
It was a luxury purchase for me in Oz but postage surprisingly low. Presentation and packaging are also on point adding to the joy in recieving the parcel.
I have just changed ink colour and was surprised by how much the little nib held before the new colour appeared in my writing.
I now covet the double end Lumos for my collection.

L
Lisa
Pen nice but

Love the pen so far but so so disappointed in the the color. The pictures are so much brighter this is so musted and the color is almost non existent 😐

J
Jen B.
Lovely little pen

This is a gorgeous bit of writing equipment in the softest sage green colour. The grip is pretty good as the lid becomes the main body of the pen and it feels nice and light to hold. Refilling isn't a hassle at all, I actually prefer this to my usual trusty fountain pen. I thought the bundle was good value for money. It's also nice to draw with as I'm currently designing a board game. Overall it's a lovely tool and a real little treat.

J
Joseph V.
A truly wonderful writing instrument!

I am a penman and fountain pen collector, The Wren quickly became my go to pen for my form of calligraphic cursive penmanship. I am repeat customer!

M
Meagan J.
Elite

I just got my order, wrote one sentence to test and ordered my second immediately! The smoothness and ability to refill is top notch! Worth the price hands down!

A
Andrew K.
Arrived - filled- dried up in cap.

I just got this pen this morning. I filled up with Toms Studio waterproof ink. Ink reached the nib. Wrote fine. Had to walk the dog so I put the cap on, remembered I had a nice new pen to sketch with and zero ink was coming out. The reservoir is full. The ink was dry in the nib! With the CAP ON!! With their own brand of ink. I went onto their live chat. Hey said they would escalate it if I leave my email. 3hours later and I have not seen a response. I’m f*cking angry at this point. Staedler pens, Uni pen, Micron!! These are the waterproof pens this website says “why buy a bunch of these when you can buy just one?” This right here is the reason. If I can’t put waterproof ink that you sell into the pen you sell and last longer than the first scribble inside its own cap then I want my money back. I’ll go buy stack of pens that will all last longer than this. Want a better review? Don’t ghost me.

E
Erika M.
Love them, but ….

I now have three of these because I love them and I love different color inks. But the midnight has chipped without ever having dropped it. Around the edges. Just by having it in my pen case. So, even though I love them I cannot give them more than three stars because of this unfortunate detail.

S
Samantha B.
A Tiny Pen for a Tiny Poem

I love writing and I love enhancing the experience with a beautiful pen. I recently purchased the Wren and the Mini Lumos so that I could write and illustrate my haiku journal. I was so impressed that I immediately purchased the Field Mouse. I now have a tiny pen in my pocket to record my tiny poems whenever inspiration strikes.

S
Sandra
A super daily writer

I love this little pen. Great for everyday writing. I love the weight of the aluminium. And capped it is small fellow but for writing with the cap on the back it is a full grown pen.

H
Heidi J.
Delightful

A beautiful pen, flows across the page and is now a part of my journal ritual. In this fast, digital era, slowing down and revelling in the tactile experience is vital for me.

C
Carolyn F.
Cool pen!

I really like this pen. It writes very well and I'm using it for my journal. The tip is great and will be trying some different colors of ink soon. Love it!

N
Nicola W.
Perfect

I have only had my pen a few hours and I love it already. It’s so simple to fill with no inky fingers. The join between the tip and the rest of the pen is so seamless I wouldn’t have noticed it had in not been in the instructions.
It’s smooth to write with and flows nicely. I love it and will definitely be thinking of another

D
DebbieV
Amazing

Had to send a review. I am so, so difficult to please but I have just opened the packaging on my beautifully wrapped Wren pen. Also bought one for my niece for Christmas so had to make sure mine worked ok. Just opened it, filled it with ink and wrote. It's a long time since I used an ink pen. It's so smooth. Even on a scrappy bit of paper, my first words using the pen in the photo.

s
sharon p.
Poised to create

I love my Wren
my little pen
my 8-sided brassy little friend
small but weighty in my hand
each stroke destined as it lands
to create some masterpiece for my fans! ;-)
PS But please make me a cover -
perhaps in leather -
so that we can travel
together,
Forever x

E
Eleven F.J.
Beautiful Pen

I will keep this pen forever. Very high quality and writes lovely. Love the brass, can’t wait for it to develop a lovely patina.

E
Erica B.
Lovely little pen - my new favourite

I was looking for something sustainable and refillable after years of throwing away empty plastic biros but I was reluctant to return to the fragile fountain pens I had used at secondary school. The Wren was the perfect answer to my writing needs. It has the practicality of a biro or fibre tip pen - no delicate nib to get bent and no need for blotting paper - but it is built to last with a tough metal body and is refilled from bottles of ink. Initially I was worried that the small size would make it uncomfortable to use and easy to lose . However the length when you slot it together is actually perfect for my hand and the small size means I can slip it into my trousers pocket so I can keep it with me everywhere I go and don't mislay it as frequently as I do most other pens!

S
Suna
I don't want to write with anything else!

Since it arrived, the Wren has reinvigorated by desire to write. From the outset, I loved the ability to mix and match colours. The pen not only looks beautiful but feels lovely in the hand- a nice weight to feel substantial but not too heavy. The barrel is on the thicker side but still feels comfortable in the hand. I was worried that it might be too short to hold, but when capped it is a decent and comfortable length.
I loved watching the cartridge suck up the ink- very pleasing indeed!
And now for the writing- it writes so beautifully. Super smooth, non scratchy and a nice ink density which has maintained itself for a good week or so now of daily writing. The thickness is perfect- similar to that of a fountain pen and makes my writing look really nice and neat. If you had very small handwriting then it may be a smidge too thick, but for my small/medium writing it's perfect.
Can't recommend this pen enough- I can't wait to write with it every day!

R
Ron L.
Betcha can't have just one

I ordered a lovely Raspberry/Midnight Wren, determined not to lose it on my black desk—and then at lunch bought a black/black at an art supply store. I haven't regretted it: having one or two pocketable pens—my shirts have no pockets for an ordinary pen—means that using notebooks becomes practical, and I fuss with my phone—and get distracted—far less. I love the feel of writing with these. I have to admit that Tom's Fibre-Tip Ink does flow more readily than Tom's Fountain Pen ink does: with the two pens, it's easy to see and feel the difference.
These were just the gateway drug: now I have Tom's Pocket Fountain Pen, too, and have upped my taste in papers. I still use all three, every day.

Reviewer avatar
Karrie E.T.
The Brass Wren Takes Flight!

Everything about Tom’s Studio’s “why” speaks to me: sustainably and earth-friendly products that also provide aesthetically pleasing and functional writing tools. The Wren checks all the boxes! From order to delivery, I could not be more pleased.

The excitement I shared with a friend while opening this birthday gift to myself was akin to the Wren taking flight! The capillary function of adding ink was pleasing to witness. The balanced weight of the brass Wren just fits right in my hand. Since owning the Wren, it has been my constant companion alongside the Semikolon notebook and 07 ink.

The brass Wren is a true conversation starter in the office. My husband, who usually just indulges my love of writing instruments, has even asked for information about purchasing one—this has never happened before.

Since owning the Wren, I have purchased two more within the month. However, it's worth noting that the weight of the colored Wrens is lighter than the brass, and it doesn't give the same effect. I highly suggest that if one can afford the brass, get it; you won’t be disappointed!

Tom, thank you for creating such great products and sharing them with your supporters across the globe!