Engineering Point Top - Improves ventilation to keep you cool and has a soft touch on the skin. Lace System - Reduces the risk of irritation and creates a firm fit. Reflective - Increases visibility on low-light adventures. FlyteFoam Blast Plus Midsole - For lightweight shock absorption and sensitive energy return. PureGEL - Shock absorbing, soft and offers bounce. Ortholite X-55 insole - Provides greater low cushioning