KAARTO® — THE PEN, RE-BENTAEROSPACE ALUMINIUMZERO MOVING PARTS15 INK COLOURSSHIPS WORLDWIDE FROM LONDONDESIGNED TO LAST GENERATIONSKAARTO® — THE PEN, RE-BENTAEROSPACE ALUMINIUMZERO MOVING PARTS15 INK COLOURSSHIPS WORLDWIDE FROM LONDONDESIGNED TO LAST GENERATIONS
THE PEN,
RE-BENT.

KAARTO is an ergonomic pen machined from one piece of aerospace aluminium. The curve holds the correct grip for you — hand relaxed, line sharp, RSI locked out. No cap. No mechanism. Nothing to break, ever.

ORDER THE DROP WHY IT EXISTS
★ DESIGNED IN LONDON ZERO MOVING PARTS The KAARTO pen and geometric aluminium stand
1SOLID PIECE OF ALUMINIUM
0MOVING PARTS
15INK COLOURS
2FINISHES — BLACK · CLEAR
01 — THE PROBLEM

YOUR GRIP IS wrecking YOUR HAND.

RSI gets in through one habit: strangling a straight pen. The correct form — fingers gently curved, near-zero effort — is impossible to hold with a normal pen. So we bent the pen instead.

A

REST, DON'T SQUEEZE

The low grip lets the pen rest between thumb and middle finger. Held, not clenched.

B

GUIDE WITH THE INDEX

Your index sits closer to the tip. Less force, more precision, full line of sight.

C

WRITE LIKE POINTING

It feels like writing with your finger itself. Strange for five minutes. Obvious forever after.

PRECISEULTRALIGHTBALANCEDWEATHERPROOFLEFT + RIGHT HANDEDALL HAND SIZESLASTS GENERATIONSPRECISEULTRALIGHTBALANCEDWEATHERPROOFLEFT + RIGHT HANDEDALL HAND SIZESLASTS GENERATIONS
02 — THE HARDWARE

MACHINED ONCE.
lasts generations.

CNC-machined aerospace aluminium, glass-bead-blast anodised finish. Anodised Black or Clear. A notch secures the tip on the go — no cap to lose. The geometric stand turns it into desk furniture.

Machining detailAEROSPACE ALUMINIUM
Finish detailBEAD-BLAST FINISH
Geometric standTHE GEOMETRIC STAND
The gripTHE GRIP, HELD FOR YOU
WritingWRITING — LINE VISIBLE
SketchingSKETCHING — FULL CONTROL
03 — THE INK SYSTEM

15 COLOURS. never dries. never leaks.

Runs the airtight Pilot Hi-Tec-C Coleto refill — plus any 92mm × 3mm pressurised cartridge (Muji, Pentel Sliccies, Uni Jetstream). Push to load, bend into the curve, click out to swap. Pick your poison:

BLUE
Loading a cartridge
Removing a cartridge
04 — THE SHOP

THE DROP IS live.

Every set = pen + geometric stand. Colours picked at checkout. Payment handled by Etsy. Ships worldwide from London.

IN STOCK
Kaarto single set

THE CLASSIC

1× KAARTO PEN · 1× GEOMETRIC STAND
£55
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MOST COPPED
Two Kaarto pens in black and clear

THE PAIR

2× KAARTO PEN · 2× GEOMETRIC STAND
£110
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IN STOCK
Kaarto trio

THE TRIO

3× KAARTO PEN · 3× GEOMETRIC STAND
£165
ORDER →

ADD-ONS AVAILABLE: EXTRA CARTRIDGES · 15-COLOUR INK KIT · CUSTOM ENGRAVING

05 — THE STORY

NINE YEARS OF BAD PENS. then a curve.

Nine years of every "ergonomic" pen on the market, through design school and a design career. They all traded away the same two things: control, and seeing your own line. Fat padded bodies, muted precision, wrists doing finger work.

June 2020: start over from the real question — why do we bend our fingers around tools at all? Prototypes in resin, then aluminium. Grip, width, balance, tuned across hands for two years. The answer kept being a curve.

"We shouldn't bend our fingers around our tools. Our tools should bend around us."

The look is Streamline Moderne — the 1930s–40s moment when design first pointed at speed and human need. KAARTO's body is that organic speed-line. The stand's geometry is the deliberate break from a cube-shaped world.

Prototypes
PROTOTYPES · JUNE 2020 →
THE KAARTO FILM
06 — QUESTIONS

ASKED. answered.

KAARTO exists because incorrect grip is a common contributor to repetitive strain injury; its shape supports the low-effort form that straight pens make impossible to hold. It builds the healthy habit — it's a tool, not a medical device, so persistent pain deserves a professional.

For about five minutes, yes — that's years of bad habit letting go. Then it clicks, and regular pens become the weird ones.

Fully. Designed and tested for right- and left-handed users, all hand sizes.

Nothing proprietary. Pilot Hi-Tec-C Coleto (15 colours, airtight, never dries or leaks) plus any 92mm × 3mm pressurised refill: Muji, Pentel Sliccies, Uni Jetstream.

One piece of CNC aerospace aluminium, anodised, zero moving parts, fully weatherproof. Nothing to snap or wear out. Built to be the last pen you buy.

Worldwide, from London, via the Etsy shop. Colour choice (Anodised Black / Clear) at checkout.

DON'T MISS
THE DROP.

ORDER KAARTO →
KAARTO® — PEN + STAND FROM £55 ORDER →