4321-MARKET: BALL-ER explores the unexpected possibilities of the iconic USM Haller Connection Ball. For this edition, designers were invited to reinterpret the USM Haller Connection Ball not as part of a conventional furniture system, but as the starting point for small, creative, and festive objects.
A total of 23 teams and 30 designers developed new objects through diverse and experimental approaches, transforming a familiar structural component into unexpected forms, functions, and meanings. From playful everyday objects to sculptural pieces, the collection highlights the creative potential of the USM Haller system beyond its traditional applications.

2026.12.12. SAT 11:00-18:00
Swiss Embassy Seoul
(77, Songwol-gil, Jongno-gu, Seoul, Republic of Korea)

✓ RSVP required.
✓ Registration link to be updated.
✓ There is no public parking.
Ae Office be formative Chanyong Park & Miji Noh Chelsea Jihong Park Daejoong Kim EOB Huisu Cho Hyunwook Lee Iann Nam Ilmiworks Jinsik Kim Jisan Chung Jiyeoung Kim & Yoosung Kim Jiyoung Choi SEOHO AHN Seunghyeon Yoo Seungmok Lee steve oh + sunny oh TEO LEO Yeonsu Na Yesul Jang Yeyeon Park youmin
Graphic design: Jiyeon Park

2025: Found Charm

2024: SONGEUN

2023: SWISS–KOREA SOUVENIR MARKET

2022: TABLE MANNER

2021: 7 to 700g

2020: 4321-X MARKET