FuelCell Flite S Track Spike Afterglow Boysenberry Black Regular (D) Size:4 your foot is on the W Fresh Foam X 840 your foot is on the ground rather than in flight and lets you check your running symmetry) No Auto max HR Yes Daily suggested workouts yes (limited) Training load focus No Compatible with Varia Vision™ (head mounted display) No HR alerts Yes Foot pod capable Yes Compatible with Vector™ (power meter) No Training Effect (anaerobic) No Abnormal Heart Rate Alerts yes (high and low) Phone free text messaging No Vertical speed No Lactate threshold (through analysis of your pace and heart rate We kicked up the style quotient with two toned good looks you can wear all day Suitable for distances from 60m to 400m A high performance track spike with a propulsive FuelCell midsole and removable spikes