SizeChina is a project led by Canadian designer Roger Ball. Roger is traveling across China, scanning people and building a digital database of Asian head and face sizes.

Why? Because bicycle helmets are designed to fit Caucasian heads, not Asian. And who wants to wear a helmet that doesn't fit? (not to mention sunglasses and hygienic face masks)

Roger is now teaching at the Hong Kong Polytechnic University and leads the Asian Ergonomic Lab.

A shorter version of the interview will appear on Episode 11 of Spark. Click above to hear our unedited interview with him.