The shoe the world 50-mile (80km) record-breaker wore is very lightweight, which is not super-light but its carbonplated rocker last makes for an energy saving ride.
A standout feature is that it is durable enough for tempo runs. Most other carbon-fibre plated racers would last less than two weeks if a mileage maniac chose to run in them.
-Jax Snyman, The Sweat Shop
