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

Didi / Zipper


We often forget to pull up the zipper of bag ,then cause missing some valuable stuff.
When we can not see bag from the backpack situation, so that thieves will catch the time we pay no attention to the zipper pull backpack, stealing things inside.
This design is mainly to solve the above problem, the two zippers is sensing from each other, when opened will be issued when "Didi" sound, remind you to take care .


Zhejiang University

Zhejiang University
Ningbo Zhejiang, China


Zhejiang University

Zhejiang University
Ningbo Zhejiang, China