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

twins cup / Product Design

twins cup

A smaller cup is placed in a bigger cup. The smaller cup which is made of vacuum flask can keep the water hot all the time.On the smaller cup ,there is a button.You can make the hot water flow into the outside cup by pressing the button so that the water prepared for drinking is always keeping in a comfortable and constant temperature.

University

Xihua university

Xihua university
Chengdu, China

Jun Zhong,
Xihua university