New · Designed for iPhone Duo

Built around the fold.

Full-grain, vegetable-tanned leather, cut for iPhone Duo. Two card slots. MagSafe and Qi2 charging. And a patina that will be yours alone.

€199.00 Pre-order

No payment today · Free delivery in the EU · 14-day right of withdrawal

ERONIX Leather Folio in Chestnut, open at an angle, with iPhone Duo inside
Full-grain, vegetable-tannedFinished as little as possible
Two card slotsInside the cover, clear of the charger
MagSafe and Qi2Snaps on, charges through
Leather Folio closed, seen from the front

The fold

Made for the fold.

iPhone Duo closes to 5.4 inches and opens to 7.6. The folio is cut to do the same — one seamless wrap of leather that moves with the hinge instead of fighting it. Scooped cutouts leave every button clear.

A raised edge keeps the outer display and the camera glass off whatever you set it down on.

5.4″ to 7.6″Closed to open, covered both ways
1.15 mmRaised edge above screen and camera
The full-grain leather, close up

The leather

Full grain. Left alone.

The hide is vegetable-tanned and finished as little as possible. Scars, grain and variations in colour are kept, not corrected — so no two folios are alike, and yours starts to look like yours within the first week.

Thin enough to charge through. Dense enough to hold its shape. Lined in microfibre wherever it meets titanium.

Patina

It gets better. Every day.

Vegetable-tanned leather darkens and burnishes with handling. Light scuffs blend into the finish, the high points polish, the colour deepens. Drag to see what a hundred days can do.

Leather Folio on day one Leather Folio after a hundred days
Day 1 Day 100

Cards

Two cards. No wallet.

Two slots inside the cover — one for the card you tap, one for the card you keep. They sit in the cover, not the back, so nothing comes between the phone and the charger.

The cover measures 3.8 mm with the slots empty; the back, 2.7 mm.

2Card slots
3.8 mmCover
2.7 mmBackplate
Leather Folio open flat: the microfibre-lined cover with two card slots on the left, iPhone Duo on the right
A MagSafe charger snapped onto the back of the Leather Folio

MagSafe · Qi2

Snaps on. Charges through.

An array of nickel-plated neodymium magnets sits between the leather and the lining, matched to the ring on iPhone Duo. It holds at 800 to 1,100 gf with Apple-certified accessories, and an alignment magnet keeps orientation-specific accessories — wallets, stands, mounts — the right way up.

MagSafe and Qi2 chargers snap on and charge through the back. Qi-certified chargers work too.

800–1,100 gfHold, with Apple-certified accessories
Diagram of the magnet array in the back of the folio CAMERA RINGanodised aluminium MAGNET ARRAYnickel-plated neodymium ALIGNMENT MAGNETorientation-specific accessories LEATHER BACK · SEEN FROM BEHIND · NOT TO SCALE

Details

The parts you touch a hundred times a day.

Anodised aluminium camera ring

Machined, anodised and set into the leather around the dual camera. It takes the knocks the glass would otherwise take.

Microfibre lining

Soft where it meets titanium. The inside of the folio is lined edge to edge.

Scooped cutouts

The side buttons sit in shallow scoops, so you find them by feel and press them without looking.

Raised edges

1.15 mm above the outer display and the camera glass, all the way round.

Tech specs

Leather Folio for iPhone Duo

Compatibility
iPhone Duo
Colour
Chestnut
Leather
Full-grain, vegetable-tannedMinimally finished; develops a patina with use
Lining
Microfibre
Camera ring
Anodised aluminium
Cards
Two slots, inside the cover
Charging
MagSafe and Qi2 compatibleWorks with Qi-certified chargers
Magnets
Nickel-plated neodymium array800–1,100 gf with Apple-certified accessories · alignment magnet
Protection
Raised edge, 1.15 mm above screen and camera
Thickness
Cover 3.8 mm · Backplate 2.7 mm
In the box
Leather Folio
Warranty
Two years

Looking after it

Wipe with a dry, soft cloth. Condition lightly with a neutral leather balm once or twice a year. Keep it out of prolonged direct sun and away from solvents, and let it dry naturally if it gets wet. Everything else — the darkening, the shine on the corners — is the leather doing what it should.

Questions

Before you pre-order.

How does pre-ordering work?
You reserve a folio now and nothing is charged. Before it ships we write to you to confirm the order and arrange payment, and you can cancel at any point before then.
How is full-grain different from other leather?
Full grain is the top layer of the hide with the grain intact. It is not sanded or embossed to hide marks, which is why it wears in rather than wearing out. Corrected-grain and bonded leathers start smoother and stay that way — until they crack.
Will the colour change?
Yes. Vegetable-tanned leather darkens with handling, skin oils and light. Expect a noticeably deeper shade within the first few months and a burnished finish on the edges and corners. Every folio ages differently — that is the point.
Does it charge with MagSafe?
Yes. The magnet array lines up with the ring on iPhone Duo, so MagSafe and Qi2 chargers snap on and charge through the leather back. The card slots are in the cover, not the back, so cards never sit between the phone and the charger.
Does the cover close over the outer display?
Yes. With iPhone Duo folded, the cover closes over the 5.4-inch outer display, so the glass is covered in a pocket or a bag. Open the cover to use the outer display, or open the phone for the 7.6-inch inner display — the folio's spine moves with it.
How do I look after the leather?
A dry, soft cloth for dust. A neutral leather balm, used sparingly, once or twice a year. No solvents, no prolonged direct sun, and if it gets wet, let it dry on its own. It needs less than you think.
Does it fit iPhone 18 or iPhone 18 Pro?
No. The folio is cut around iPhone Duo's hinge and its 5.4-inch outer display, so it fits iPhone Duo only. iPhone 18 and iPhone 18 Pro are single-screen phones with different dimensions and camera layouts, and a folio made for them would be a different product.
What is iPhone Duo?
iPhone Duo is Apple's first folding iPhone, introduced on 9 September 2026 alongside the iPhone 18 family: a 5.4-inch outer display, a 7.6-inch inner display, a grade 5 titanium body, and MagSafe with Qi2 charging. Pre-orders open on 16 October 2026 and it ships from 23 October.
ERONIX Leather Folio in Chestnut

Pre-order

Leather Folio for iPhone Duo

ColourChestnut
DeliveryFree · Ireland
Returns30 days · 14-day right of withdrawal
WarrantyTwo years
€199.00Includes 23% VAT (€37.21) · nothing is charged today

We'll write to you before the folio ships to confirm the order and arrange payment. Cancel any time before then.