synthetic-and-rubber Imported Rubber sole Engineered Mesh Upper: Double engineered jacquard mesh upper provides excellent comfort and support while keeping feet cool Heel Stabilizer: Helps support the foot and create a more balanced stride Heel Stabilizer: The heel stabilizer helps support the foot and create a more balanced stride Improved Tongue Fit: Gusseted tongue wing fit system improves the midfoot fit and reduces tongue sliding FLYTEFOAM BLAST: Lightweight, midsole foam with energetic and highly responsive cushioning and bounce for an efficient ride.