The Armour Shell

The inner layer that friction fits onto your CGM. Push on, go.

Works with every Armour. Works without one too.

Designed by a Type 1 diabetic, for diabetics.

In the box

The Shell — precision-printed in plant-based PLA, available in thirteen colours.

A removal tool — slim and functional, made for taking your Shell off without damaging your CGM.

Which Shell fits my CGM?

We make five Shell sizes, one for each sensor we support. Pick the one that matches the writing on your sensor's box.

Dexcom G7 / One+ Dexcom G6 / One Libre 2 / 2+ Libre 3 / 3+ Simplera / Sync

Your CGM ships at the same dimensions every time, so the grip is identical.

The friction-fit adapts to the CGM. No force required, no chance of damaging it. Slides over, stays put.

Each Shell is designed to work with future Armour releases. The system is built to grow with your collection.

Will it still scan?

Yes. Phone NFC scanning works straight through the Shell. No signal interference, no need to remove anything before checking your readings. Tested with every sensor it's built for.

Material + care

Built from PLA, a plant-based polymer printed at high resolution for a clean, precise finish. Rigid. Lightweight. Holds colour beautifully.

Water resistant. Showers, sweat and rain are all fine. Not for swimming or submersion. Skin-safe — non-toxic, no harsh additives, comfortable against skin for daily wear. Not for contact sports — rugby, boxing, MMA, take the Shell off. PLA is rigid, not impact-absorbing.

Cleaning — wipe with alcohol, or a soft cloth and warm water with mild soap. Avoid harsh solvents. Dry fully before snapping back onto your sensor.

Storage — when it's not on your arm, keep it in the pouch it shipped in. Keep it out of direct sunlight and away from heat — car dashboards, radiators, hot windowsills. PLA softens at lower temperatures than other plastics.

Avoid — abrasive cleaners, dishwashers, prolonged heat, and forcing it onto a sensor that isn't its match.