“When you wear hi-viz jackets, people just don’t really even, look at you.” Words to live by if you need to blend in to do some, uh, filming. Everywhere you look in the city, you’ll see them – walls. Most of the time they go by relatively unnoticed, unless you have the ability to see lines where others don’t. Sebastian ‘Bas’ Keep is a madman on a BMX bike, and in his latest project (which actually went down in 2015) he searches out some of the most insane wall rides imaginable with the help of his friends, some massive ramps, and some hi-viz jackets…