The Wren uses a fantastic Japanese-made writing tip that has a similar feel on the page to a rollerball or ballpoint. Because there is no ball that lays the ink on the page, it means that there is no 'blobbing' or line inconsistency. The nice thing is that you can also get slight line variation by adding a little pressure to your writing.

Unlike disposable pens, the Wren is designed to be endlessly refillable, helping to reduce the staggering 10 billion pens discarded every year.

The Lumos is designed to be highly versatile – it can accommodate 11 different tips within the same pen, allowing it to function as a refillable fineliner, writing pen, and brush pen.

In contrast, the Wren is more of a dedicated pocket writing pen. It features a specialised writing tip, a quick pop-on and pop-off cap, and is designed to transition from a compact, travel-friendly size to a very comfortable length in the hand when capped.

Precision machined anodised aluminium, made on the same machines that are used to make parts for the aerospace industry. Anodising makes the pen durable, with a finish tough enough to stand the test of time and an array of stunning colour options.

• Length capped – 80mm
• Posted (cap on the end of the pen) – 120mm
• Weight – 20g

Yes, the Wren is ideal for travel. Its compact size, lightweight build, secure cap, and comfortable design make it perfect for jotting down notes or journaling on the go.

The Wren is also safe for aeroplane travel. None of its elements are considered liquid items, and it can be carried normally in your hand luggage. We do not recommend transporting it in your checked luggage.

It's absolutely fine. The ink dries really quickly so there is no fear of smudging.

For extra grip, consider the Wren in Midnight or Black. These colours come with a matte finish, providing a secure hold.

All other Wren colours include ‘micro-grooves’ designed to enhance grip.

Not just yet, but we’re working on it!

Each colour in The Wren – Write Off range is made from a variety of single-use plastic sources. While the exact mix varies from batch to batch, here’s a breakdown of some of the most commonly occurring components used to create each shade:

• Black – Primarily made from discarded pen lids and recycled DVD cases.
• Blue – Sourced from a mix of pen lids and recycled chocolate tubs.
• Orange – A blend of repurposed pen lids and recycled DVD cases.
• White – Created using plastic from whiteboard markers.
• Purple – Made from a combination of pen lids and protein shaker lids.

Because of the recycling process, each lid has subtle variations, making every Write Off pen lid unique.

We collaborate with schools and local businesses to collect plastic waste, which is then sorted, disassembled, and transformed into plastic chips for injection moulding.

We’re starting with The Wren and its recycled lids, but we’re already exploring what’s next. Stay tuned!

We’re on it! Brothers Make are already producing more and we expect to restock within a week or two. Sign up for “Notify Me” alerts on the product page, and we’ll let you know as soon as they’re back.

At the moment, we’re prioritising schools, as they generate an overwhelming amount of pen waste. However, we’re always looking for ways to expand the project! If you’re an individual (or an organisation) who’d like to contribute, please fill out the form here and we’ll be in touch soon!

The Write Off lid is made from recycled plastic, making it lighter than the original Wren, which features an anodised aluminium lid. The total weight of the Write Off pen is 14g, compared to 18g for the original. It’s a more lightweight option for everyday use.

When plastic flows into the mould, it leaves behind a small dimple (called the sprue). This is carefully clipped, smoothed with a blowtorch, and buffed on a wheel – a true maker’s mark that celebrates craftsmanship.

We now offer a specific Fibre Tip Ink in Midnight, which is the same ink that came with your Wren pen and is an ideal match. The Wren is also compatible with nearly all fountain pen inks, with the exception of highly experimental varieties like shimmer or iridescent inks.

Be aware that some fountain pen ink colours may appear lighter after initial use due to ink concentration in the tip, but this is a normal and often attractive characteristic.

It’s important to avoid using calligraphy inks with acrylic binders, as they can clog the pen.

To refill, simply unscrew the top section of your Wren. Inside, you'll find a reservoir. Dip it in ink and let capillary action draw the ink into the pen.

To change ink colours, rinse the nib and reservoir under warm water, dry thoroughly, and refill with your new ink. Alternatively, you can swap out the reservoir and tip entirely, storing the removed components in a handy container to prevent drying.

If you consistently use the same ink and take proper care of it, the reservoir can last indefinitely.

However, if you frequently change inks and wash out the reservoir each time, the capillary action might be affected, limiting its lifespan to about 4-5 washes.

We offer reservoir containers that make it easy to switch between different ink colours while maintaining their condition. Once a reservoir is fully used, we do sell spares.

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!

The Wren features a specially designed tip crafted by Tom, intended for months of daily use. You can find replacement tips specifically for the Wren here.

Please note that Lumos tips are not compatible with the Wren.

Unfortunately, Lumos tips are not compatible with the Wren. However, you can find high-quality Japanese-made replacement tips for the Wren available here.

You can expect the high-quality, Japanese-made tip to last for months of regular use. The lifespan of a tip varies depending on factors such as writing style, pressure applied, paper type, and ink choice. When the tip eventually wears down, you can easily replace it with our handy packs of three replacement tips, available here. 

To clean the reservoir and pen body, soak them in warm soapy water and flush under the tap. For the tips, soak in nib cleaning solution or warm soapy water, then rinse thoroughly. A bit of ink may remain, but it will blend out after a few doodles with new ink. Let everything dry naturally for 48 hours before reassembling to avoid water damage.

Store your spare reservoirs and tips in our handy containers (or a ziplock bag) to prevent them from drying out, keeping them ready for future use.

We recommend storing your Wren horizontally in a cool, dry place to keep it in tip-top condition.

If the lid is stuck and you can't remove it, here are a few techniques you can try:

Grip Improvement: Wrap a rubber band around the lid to improve your grip. This can help you twist it off more easily without needing to apply too much force.

Warm Water Soak: Submerge just the lid in warm (not hot) water for a few minutes. The warmth may cause the material to expand slightly, making it easier to remove the lid.

Tapping Method: Gently tap the lid on a hard surface, like the edge of a table, while simultaneously trying to twist it off. Be careful not to apply too much pressure to avoid damaging the item.

These methods should help you get the lid unstuck.

It's super easy to refresh the pen by recharging the reservoir with the original ink. If your pen is running a wee bit dry you can also dip the tip in water to get it going again.