The Magic Speed 4 shoe is designed to support your racing goals. In addition to the softer cushioning experience, this shoe helps create better stability throughout your stride. A sculpted carbon plate is designed to help improve stability and propel your foot forward. This helps create a smoother and more propulsive experience during the toe-off phase of your stride.Additionally, this shoe is updated with FF TURBO cushioning, which helps you experience a more energetic toe-off during tempo runs and races.Pronation:Neutral:- Foot Type: Normal size arches- Push Off: There is even distribution from the front of the foot.- How your foot contacts the ground: The foot lands on outside of the heel, then rolls inward (pronates) to absorb shock and support body weight.Underpronation:- Foot Type: High arches- Push Off: The pressure is on smaller toes on outside of foot.- How your foot contacts the ground: The outer side of the heel hits the ground at an increased angle with little or no normal pronation, causing a large transmission of shock through the lower leg.Features:- Engineered Mesh upper- Improves breathability- At least 50% of the shoe's main upper material is made with recycled materials to reduce waste and carbon emissions- The sockliner is produced with the solution dyeing process that reduces water usage by approximately 33% and carbon emissions by approximately 45% compared to the conventional dyeing technology- Full-length carbon plate- Adds structure and improve toe-off propulsion- FF BLAST TURBO cushioning- Our lightest and bounciest cushioning material that´s 33% lighter and 13% more responsive than FF BLAST cushioning- ASICSGRIP rubber outsole- Improves tractionSpecifications:- Surface: Road- Weight: 207 g/7.4 oz