It's called "Rolloe Roll Off Emissions," the new invention that uses a series of sponges and filters to capture harmful emissions before releasing clean air back into the environment.

The inventor Kristen Tapping, of this bicycle wheel used 3D printing to be able to produce Rolloe, inspired by the pollution of London's streets.

Trained in industrial design the inventor believes the Rolloe could provide a new method of clean transportation for the busy cycling community.

By the way, bicycles in particular are great for health-conscious people, as they can also provide the recommended level of daily cardio.

The Rolloe wheel weighs about 1kg and is designed to fit on the frames of ordinary bicycles, consisting of two finned rims made of ABS and a center triple wheel made of nylon - all of which can be 3D printed or injection molded.

The system works by channeling air through the inner cylindrical opening of the rim, where three different types of filters are housed, before expelling the purified air through the outer fins. This air is expelled at a rate of 0.665m³ per kilometer.