Even with longer duration of operation the Airpad of the ZENCUBE stays perfectly in shape: this is realized by a 20 Watt solar module in combination with a power pump.
The pumping function is monitored by a pressure guard. This way the ZENCUBE stays in form even without external electricity - as long as you want and without any additional effort.
Positive side effect: Charge your iPhone of listen to your MP3 player with the help of this module.