Unsupported browser

You are using an outdated browser. Please upgrade your browser to improve your experience.

Sign up for an Award

Participate with your entry in one of our professional or student awards.

Sign up for an award

Sign up for a Profile

Create your own profile and publish it in the iF WORLD DESIGN GUIDE.

Sign up for a profile

Learn more:

iF SOCIAL IMPACT PRIZE (free of charge)

Present your project for free and win your share of EUR 50,000 in prize money.

Publish your project

Cleanangle / Chair / Public Chair

Cleanangle / Chair
Cleanangle / Chair

“Sorry human, but this seat is occupied”

We usually see trash and crumbs on the public chair and it makes people feel dirty, uncomfortable. But people also tend to put down their trash on the flat area. Our design considered this duality of human characteristics to solve the problem.

'Cleanangle' can slide down the trash on the seat with its 30’ degree incline in normal status. When user seats on the chair, the seat starts tilting down to 0’ degree with roll-up belt. After the user stands up, the seat turns back to normal status again so people cannot put or let their trash on the seat with this movement.


SungKyunKwan Univ

SungKyunKwan Univ
seoul, South Korea


SungKyunKwan Univ

SungKyunKwan Univ
seoul, South Korea

Jeong Hyeon, Kim Jin su, Oh Tae seok, Kim Hyun Jung, Baek