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:


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

Publish your project

energetic straw / heater

energetic straw
energetic straw

Energetic straw is a rapid heating solution to drinking water for those keen on outdoor sports. It can be easily attached to the climbing pack.
Inside the silicon case, there is a metal ball which bounces up and down between the two electricity poles and induction coil to generate electricity. Filled with energy storage gel, energetic straw heat water up when water rush into the spiral channel.
Designed to heat water rapidly outdoors, the energetic straw is minimal, easy to use and fit for most water bottles. Whenever man needs hot water, screw up the energetic straw to the bottle, drinking as usual.


Tongji university

Tongji university
Shanghai, China


Tongji university

Tongji university
Shanghai, China

Yijing Yin ; Jiawen Chan