A startup has an idea to revolutionize how we take showers, and Apple's CEO has already invested in it

Would you spend $400 on a shower head?

Probably not. But this isn't any ordinary shower head - this is a Nebia, a shower system that's been backed by some pretty powerful players, including startup seed fund Y Combinator, Google chairman Eric Schmidt's Family Foundation, and even Apple CEO Tim Cook, who was the company's first angel investor.

Nebia's Kickstarter page for the shower head went live on Monday night. And as of Tuesday morning, it's already surpassed - even doubled - its $100,000 goal.

Nebia CEO Philip Winter explained why the Nebia shower head is so special in its Kickstarter video and in an interview with Venturebeat.