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

Solar Cooling Bottle / Water Bottle

Solar Cooling Bottle
Solar Cooling Bottle

The Solar Cooling Bottle is able to cool the water saved inside by employing the natural phenomenon of evaporation. On a summer day when the evaporation is fostered by the higher temperature, there is a heat subtraction that causes paradox, a drop in temperature of the water saved in the bottle. This happens because of a fiber that wraps the aluminum bottle. It’s moisten by water and is in contact with air stream in order to facilitate the evaporation. The bottle is effortless to use. It’s completely disassembled. All you need to do is unscrew the upper and lower supports, moisten the rayon sheet, fill the bottle and put it all back together


University of Calabria

University of Calabria
Cosenza, Italy


Morrone, Marco

Morrone, Marco
Corigliano Calabro, Italy