
Chapter 1
The bubble wrap under your feet
Chapter 2
The secret curved plate
Chapter 3
The battle for grip
Chapter 4
The speed ban
YOUR GOAL
Master of The wild physics of the modern running shoe
Ch 3 · The battle for grip
nike Running Shoe Grip
When your outsole slides a millimeter back, that micro-slip is draining your energy.
Fun Fact
Waffle iron ruin: Bill Bowerman's original 1971 waffle iron experiment was actually dug up from a family landfill in 2010 and is now highly valuable.
Quiz
How much does tire-grade Continental rubber increase traction on wet surfaces compared to standard shoe rubber?
Quiz
What household kitchen appliance did Bill Bowerman use in 1971 to create Nike's first grippy running sole?
Quiz
Which Italian brand, founded in 1937, is famous for making rugged, deep-grooved rubber outsoles for trail running?
Quiz
Which German car tire manufacturer has partnered with Adidas since 2010 to make high-traction shoe outsoles?
Quiz
What did early running shoes use for grip before the invention of rubber tread patterns?
Quiz
Which animal's split-hoof structure inspired modern trail running shoes to have flexible, adaptive outsoles?


