The Wren - Refillable Writing Pen
The Wren refillable everyday writing pen in Blush (lid) and Lilac (body) shown on an open notebook filled with writing and illustrations
The Wren refillable everyday writing pen in (left to right) Lilac, Blush and Ivy with a bottle of Iris Fountain Pen Ink – showing how to fill the ink reservoir
The Wren refillable everyday writing pen in Sage shown with the packaging – contents includes instruction book, 3ml fibre tip ink sample, ink reservoir and writing tip
GIF showing all colours of the Wren refillable everyday writing pen
The Wren refillable everyday writing pen in Blush, in it's box
An ivy coloured Wren with all components stretched and apart with annotation to each component of the pen displayed on a pink background.
The Wren refillable everyday writing pen in Ivy with a bottle of Mallard Fountain Pen Ink – showing how to fill the ink reservoir
Notice describing compatible ink for use in the Lumos and Wren pens with fountain pen ink swatches
All colours of the Wren refillable everyday writing pen
The Wren refillable everyday writing pen in Blush (lid) and Midnight (body) shown on an open notebook explaining that a single reservoir fill will write for 334 metres (the height of the Eiffel Tower)
The Wren refillable everyday writing pen in (top to bottom) Blush, Sage, Lilac, Raspberry, Ivy, Iris, Midnight, Black
The Wren refillable everyday writing pen in Sage
The Wren refillable everyday writing pen in Raspberry
The Wren refillable everyday writing pen in Blush
The Wren refillable everyday writing pen in Iris
The Wren refillable everyday writing pen in Ivy
The Wren refillable everyday writing pen in Lilac
The Wren refillable everyday writing pen in Matte Midnight
The Wren refillable everyday writing pen in Matte Black
The Wren - Refillable Writing Pen
The Wren refillable everyday writing pen in Blush (lid) and Lilac (body) shown on an open notebook filled with writing and illustrations
The Wren refillable everyday writing pen in (left to right) Lilac, Blush and Ivy with a bottle of Iris Fountain Pen Ink – showing how to fill the ink reservoir
The Wren refillable everyday writing pen in Sage shown with the packaging – contents includes instruction book, 3ml fibre tip ink sample, ink reservoir and writing tip
GIF showing all colours of the Wren refillable everyday writing pen
The Wren refillable everyday writing pen in Blush, in it's box
An ivy coloured Wren with all components stretched and apart with annotation to each component of the pen displayed on a pink background.
The Wren refillable everyday writing pen in Ivy with a bottle of Mallard Fountain Pen Ink – showing how to fill the ink reservoir
Notice describing compatible ink for use in the Lumos and Wren pens with fountain pen ink swatches
All colours of the Wren refillable everyday writing pen
The Wren refillable everyday writing pen in Blush (lid) and Midnight (body) shown on an open notebook explaining that a single reservoir fill will write for 334 metres (the height of the Eiffel Tower)
The Wren refillable everyday writing pen in (top to bottom) Blush, Sage, Lilac, Raspberry, Ivy, Iris, Midnight, Black
The Wren refillable everyday writing pen in Sage
The Wren refillable everyday writing pen in Raspberry
The Wren refillable everyday writing pen in Blush
The Wren refillable everyday writing pen in Iris
The Wren refillable everyday writing pen in Ivy
The Wren refillable everyday writing pen in Lilac
The Wren refillable everyday writing pen in Matte Midnight
The Wren refillable everyday writing pen in Matte Black
Video showing the Wren refillable everyday writing pen in Black, with packaging

The Wren - Refillable Writing Pen

Choose your perfect colour combination

£35.00

The Wren - Refillable Writing Pen | BODY COLOUR | Black
The Wren - Refillable Writing Pen | BODY COLOUR | Blush
The Wren - Refillable Writing Pen | BODY COLOUR | Iris
The Wren - Refillable Writing Pen | BODY COLOUR | Ivy
The Wren - Refillable Writing Pen | BODY COLOUR | Lilac
The Wren - Refillable Writing Pen | BODY COLOUR | Midnight
The Wren - Refillable Writing Pen | BODY COLOUR | Mulberry
The Wren - Refillable Writing Pen | BODY COLOUR | Sage
The Wren - Refillable Writing Pen | LID COLOUR | Black
The Wren - Refillable Writing Pen | LID COLOUR | Blush
The Wren - Refillable Writing Pen | LID COLOUR | Iris
The Wren - Refillable Writing Pen | LID COLOUR | Ivy
The Wren - Refillable Writing Pen | LID COLOUR | Lilac
The Wren - Refillable Writing Pen | LID COLOUR | Midnight
The Wren - Refillable Writing Pen | LID COLOUR | Mulberry
The Wren - Refillable Writing Pen | LID COLOUR | Sage
Body colour
Lid colour
Adding to Cart Added to Cart

Wren - Take Flight & Write

Writing Instrument of the Year 2025, Stationery Awards, London

A beautiful and infinitely refillable writing pen, equipped with a Japanese-made writing tip. We're on a mission to make choosing refillable options easier, so you can now buy two (or more!) Wren pens and save 10%

Each year, an estimated 9 billion pens are thrown away, contributing to growing environmental waste. Many writing tools are designed with convenience in mind, often leading to a cycle of frequent replacements, which generates significant waste and limits options for those seeking more sustainable, long-lasting choices.

As a product designer and craftsman who loves writing, I became frustrated with the waste created by disposable pens. They would pile up in drawers, waiting for a specific refill, or worse, end up in the bin despite being perfectly usable – if only they had ink.

After years of designing and handcrafting calligraphy and fountain pens for creatives worldwide, I decided it was time to tackle one of the biggest culprits: the everyday writing pen. The result? The Wren – a pen designed not only to write beautifully but also to last a lifetime, helping to reduce the mountains of waste created by disposable pens.

Included in the box:

  • The Wren in your choice of colour
  • 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 – 20g
  • Made from Anodised Aluminium

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, No.60 Pigment Black Ink or Calligraphy Inks.

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! I’ve designed the pen to include ‘micro-grooves’, tiny ridges that enhance grip without using plastics. Please note: the black and midnight colourways do not feature these micro-grooves, as they have a grippy matte finish.

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!

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Customer Reviews

Based on 1265 reviews
88%
(1111)
7%
(84)
3%
(38)
1%
(15)
1%
(17)
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!

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Pam J.
Beware!

Goodness knows, I tried to resist those annoyingly persistent Facebook ads, but I am weak, and a pen adict. I didn't have a hope. 

Even after I placed the order, I still thought it would just be a clever marketing spin. 

Unfortunately, I loved my initial Wren from Amazon so much that I have since bought a further three Wrens, a Lumos Mini and a Lumos Duo direct from Tom's Studio. And I can't swear that I won't buy more. Save yourself. Just say no. The ads aren't a spin. These are lovely pens. A joy to write and draw with. With so many tips, finishes, colours, inks and accessories, this is one huge delightfully inky rabbit hole.

Clever Tom.

( Oh, and the free Jam Doughut tea sample I received is possibly the nicest tea I've ever had.)

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AS
Beautiful

I love all my wrens… but this one is special. It is heavier and therefore feels different. Very beautiful!!! I love it!

C
Catherine M.
Always beautiful

I always love getting my Tom's Studio pens and inks. They are beautiful, smooth, and write in a high quality way.

C
Cary S.
Perfect Pen

The brass Wren is a pleasure to use and so well balanced that your handwriting actually looks better. Easy to write with. Easy to refill. Plus, it will make all of your fellow pen buddies jealous until they get one.

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