ASICS Kids' GT-1000 5 GS Running Shoe 100% Synthetic Rubber sole Shaft measures approximately 2" from arch Rearfoot gel cushioning system: attenuates shock during impact phase and allows for a smooth transition to midstance. Duomax support system: a dual density midsole system positioned to enhance support and stability, positioned sport specifically. Trusstic system technology: reduces the weight of the sole unit while retaining the structural integrity of the shoe. Reinforced stitched toe cap: the outsole is stitched directly to the upper for exceptional durability.