Upgraded with the all-new FlyteFoam?? Propel midsole, the RoadHawk FF 2 delivers a lightweight ride with continuous cushioning. Feel the bounceback with each stride - from soft landings to energized push-offs. Its seamless upper surrounds your foot with adaptive support and exceptional breathability in a streamlined, stylish package that begs to hit the road. . . Breathable mesh upper. I.G.S?? (Impact Guidance System) Technology: ASICS design philosophy that employs linked componentry to enhance the foot's natural gait from heel strike to toe-off.. FlyteFoam?? Propel Technology: ASICS' energetic foam formulation provides supreme bounce, thanks to a unique elastomer compound.. AHAR?? Plus Outsole: Strategically positioned in critical areas of the outsole, this exceptionally durable compound is 50% more durable than standard ASICS High Abrasion Rubber.. SpevaFoam??? 45 Lasting: Employs 45-degree full-length SpevaFoam??? 45 lasting material for a soft platform feel and improved comfort.. Seamless Construction: The use of seamless materials reduces the potential for irritation and friction caused by traditional stitches and seams.. HG10MM?? Heel Gradient: Shifts body mass forward, reducing strain on lower limbs.. Weight: 7.48 oz.. Heel Height: 21mm; Forefoot Height: 11mm. Imported.