Shoe Traction: How a Sole Grips Cobblestones, Asphalt and Wet Marble
Shoe traction explained: what rubber and tread actually do, why wet marble is treacherous, the pendulum test, how worn soles lose grip, and why even the best boots slip on ice.
travel shoes
Shoes for Carry-On Travel: How to Pick the Pairs That Make the Cut
Shoes for carry-on travel: which pair to wear on the plane, why you need two, what cobblestones and rain ask of a sole, and how to pack them, backed by lab data.