The translucent upper of the Nike Alphina 5000 reveals its supportive FlyWire construction, mixing heritage running DNA with modern track style. Dual density sock liner combines with the foam midsole to add comfort to your stride. The Flywire cables around the foot and heel feel supportive. The no-sew upper adds to the sporty look and is durable. The foam midsole feels soft and springy and combines with a dual density sockliner for maximum comfort. The rubber sole adds durability and traction.