KOREAN FRIENDS — X³
Model in a GALLERY X hoodie, sitting against a concrete wall

We sew sensors into clothing.
Our AI reads what they record.

X³ is the fashion-tech brand of Korean Friends. GALLERY X makes the clothes, RFID-X the sensor, FAI-X the AI.

↓ See the three layers

X³ · Three brands, one garment

One garment,
three layers.

Clothes you wear, a sensor sewn in,
an AI that reads the record.

  1. GALLERY X — apparelA custom apparel brand with a street edge.
  2. FAI-X — AIFashion AI that reads a garment’s record to track stock and tell genuine from fake.
  3. RFID-X — sensorA sensor sewn in where the care label goes. NFC and UHF in a single tag.

RFID-X · Sensor

RFID-X

Garment RFID,
sewn in like a care label.

One tag carries both NFC and UHF. Shoppers read it by tapping a phone; stores and warehouses read many garments at once with a handheld reader or a gate. Unlike a hang tag cut off at the till, it stays sewn into the garment for its whole life.

NFC13.56 MHzUHF860–960 MHzAttachmentsewn-in · wash-durableRegistered patents7

More on RFID-X ↗rfidx.koreanfriends.co.kr/en
RFID-X
NFC · 13.56 MHzShoppers — tap a phone to read it.
GATE
UHF · 860–960 MHzStores and logistics — a handheld reader or gate reads many garments at once.
Model in a GALLERY X T-shirt
Production history
Which line sewed it, and when
Stock movement
Between warehouse and store
Sales
Where it sold, and with what
Wash and wear history
Needs RFID-X sewn into the garment

FAI-X · AI

FAI-X

Fashion AI that reads
where a garment has been.

Which line sewed it, which warehouses and stores it passed through, where it sold, how it was washed and worn. FAI-X uses that record to manage styles, analyze stores and authenticate products.

  • Style management
  • Retail analytics
  • Authentication
  • Matching
  • Digital closet
  • Healthcare linkage

Store analytics and recommendations run on the data you already have. Tracking after washing and authentication need RFID-X sewn into the garment.

An enterprise AI for fashion brands, retailers and uniform or rental operators.

More on FAI-X ↗faix.koreanfriends.co.kr

GALLERY X

Model in an alley wearing a back-print graphic T-shirt
Graphic T-shirt
Three GALLERY X models in a narrow alley
T-shirts · check trousers
Model in a GALLERY X graphic sweatshirt
Sweatshirt

GALLERY X · Apparel

Custom apparel
with a street edge.

The line includes T-shirts printed with graphics such as Angel, Winged Lion and X-ray, terry and fleece sweatshirts, and winter padded jackets.

Trademark No. 40-2476214 · registered 2025.12

Eight GALLERY X models in front of a green shutter
Lookbook
Model in a back-print sweatshirt, standing in the factory
Back print

+82FACTORY · Geumcheon, Seoul

Our factory sits
next to our lab.

One complex in Geumcheon, Seoul holds our R&D lab, a sewing factory, printing equipment and a warehouse. The people who develop the sensors and the people who sew the clothes work in the same place.

  1. Spreading machine laying out fabric01SpreadingFabric is laid out in many plies.
  2. Automatic cutter head02CuttingAn automatic cutter follows the pattern.
  3. Hands sewing fabric at a sewing machine03SewingOverhead hanger lines carry each piece from station to station.
  4. Stack of +82GALLERY shipping boxes04ShippingBoxed and sent to stores and customers.
Address
468 Seobusaet-gil, Geumcheon-gu, Seoul
One complex
Lab · sewing · printing · logistics
Smart factory
Built 2021 · upgraded 2025
Supply record
Direct supply contract with The Metropolitan Museum of Art · 2021.12
More on +82FACTORY ↗plus82factory.koreanfriends.co.kr/en

Contact

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