Which case should I pick?

The travel tube is the smaller one: it holds just the pen and comes with a stand for the fridge door. The flat case is bigger but has room for needles and alcohol wipes as well, so everything for one injection travels together.

Both are made to their designers' measurements for the KwikPen. We haven't tried them on a pen ourselves yet, so check yours against the sizes on the labels before you order.

Will it keep my pen cool?

No. They're carry cases, not cool bags, and they aren't medical devices. Keep and carry your pen the way its leaflet says.

Why PETG and not PLA?

PETG puts up with heat better than PLA, which matters for something that sits in a bag on a sunny day or in a car.

How quickly will it arrive?

We print to order and usually dispatch within 2 working days. You choose Royal Mail postage on the payment page.

Do you make cases for other pens?

Our catalogue has cases for other pens too, such as the FlexTouch pen used for Wegovy and Ozempic. Search it for your pen, or upload your own file for an instant price.

The six on each label are on the shelf. For anything else, choose “More options”. We order those in, which adds about a working day.

Mounjaro KwikPen cases, 3D printed in the UK

Stop your pen rattling round the bottom of your bag

Two cases made for the KwikPen, the pen Mounjaro comes in. One is a slim screw-top tube that comes with a stand for the fridge door. The other is a flat case with room for needles and wipes. Pick a colour, press Buy now, and we print it in our Basingstoke workshop and post it to you.

PETG6 coloursFrom £6.90Posted in about 2 working days

Hark Tech workshop, Basingstoke1 of 2

Travel tube and fridge stand

Contents: 1 tube, 1 screw lid, 1 fridge stand
Size: Tube 150 mm long, 33 mm across
Material: PETG
Design: MikeBK, Printables

Slips into a bag like a fat marker pen. The stand keeps the pen upright in the fridge door.

Colour: Black

£6.90 plus postage

Buy now More options

Hark Tech workshop, Basingstoke2 of 2

Flat travel case

Contents: 2 halves that close together
Size: About 166 by 61 mm
Material: PETG
Design: Colin8, Printables

Space for the pen plus needles and alcohol wipes, as the designer describes it.

Colour: Blue

£10.93 plus postage

Buy now More options

Which case?

Feature	Travel tube and stand	Flat travel case
Holds	The pen	The pen, needles and alcohol wipes
Size	150 by 33 mm tube	About 166 by 61 mm
Fridge stand	Included	No
Pieces	3	2
Price	£6.90	£10.93

By choosing Buy now you confirm the order follows our printing safety terms. Prices checked 10 October 2026; the payment page shows the live price.

Going away for a few days?

Both cases are rigid plastic, so a packed bag can't bend them the way it can a soft pouch. If you're flying, check your airline's rules for carrying medicines before you go.

Good to know

Which case should I pick?: The travel tube is the smaller one: it holds just the pen and comes with a stand for the fridge door. The flat case is bigger but has room for needles and alcohol wipes as well, so everything for one injection travels together.
Will it fit my pen?: Both are made to their designers' measurements for the KwikPen. We haven't tried them on a pen ourselves yet, so check yours against the sizes on the labels before you order.
Will it keep my pen cool?: No. They're carry cases, not cool bags, and they aren't medical devices. Keep and carry your pen the way its leaflet says.
Why PETG and not PLA?: PETG puts up with heat better than PLA, which matters for something that sits in a bag on a sunny day or in a car.
How quickly will it arrive?: We print to order and usually dispatch within 2 working days. You choose Royal Mail postage on the payment page.
Do you make cases for other pens?: Our catalogue has cases for other pens too, such as the FlexTouch pen used for Wegovy and Ozempic. Search it for your pen, or upload your own file for an instant price.
Other colours?: The six on each label are on the shelf. For anything else, choose “More options”. We order those in, which adds about a working day.

Mounjaro and KwikPen are trade marks of Eli Lilly and Company. Wegovy, Ozempic and FlexTouch are trade marks of Novo Nordisk. Hark Tech is not affiliated with or endorsed by either company. Product pictures are our renders of the print files, not photos. Photos by Irene Kredenets and Marissa Grootes on Unsplash. Both case designs are by independent makers and credited on their model pages.