The makers of Grayl start their quest for funding with Brook and Brian putting the water filtration system to the ultimate test. Drinking filtered toilet water.

Brook and Brian look over the Rocketskates in the lab, but the true test comes with a test on the streets. Find out what happens after a shaky start.

Brian and Brook know the only place to test Reflex Strike, the boxing glove designed to sharpen your reflexes, is in the ring. They have some fun, but does it stand up to a pro?

The Droidel made it through the expert test, but the consumer test has the father-son team worried if their little social robot is doomed.

Liquid Off is off to a decent start with a viable expert test, but the team knows it is how the consumer perceives it that guides whether Marc makes an investment.

The first step is the pitch, and the panel pulls no punches if they aren't sold on an idea right out of the gate. But, they will rely on the tests to form their final opinion.

Innovative duo showcase their new brand of water filtration.

Check out the helicopter you fly with your brain.

Brook and Brian get the briefing on how the Mind Rider bike helmet uses brainwave sensors to gather information about a rider and the environment around them.

The Zero Hour flashlight/power source had people talking about its versatility and design, but what did they say about the price?

Passing the expert test, Bondic moves on to face consumers. After a few tries the testers seem to get it, but what does Marc think?

Straight out of high school these makers have created a Roboarm which they hope will revolutionize the prosthetics industry.

Two regular firefighters who got frustrated with weak laces on their boots took to their garage to dream up something that would hold up. But do they hold up to their claim of "indestructibility?"

This invention was inspired after the inventor saw construction crews using fragile home appliances on build sites. He’s got a partner who made the Coffeeboxx look pretty rugged, but is it?

Brook and Brian can’t wait to test this unique grill. JR, the inventor, boldly claims this wood burning stove – that can work in an environment – get reach 1000 degrees in five minutes. He’s going to be held to his word.

The judges love the advanced prototype called the "Bionic Boot." The boots mimic an animal's leg and claims to allow the user to run 25mph, but Marc's concern is safety.