The Under Armour Speedform AMP is a new breed of training shoe for the avid gym-goer. These trainers feature a superior fit that allows for more efficient movement and explosive power. You'll be sure to get the most from your training sessions in these stylish and comfort-driven shoes. Upper: Innovative UA SpeedForm® technology delivers zero distraction while running. External TPU heel counter provides security and support. Lace-up front offers an adjustable fit.Midsole: UA AMP technology promotes better biomechanical movement and optimal fit. Dual-layer midsole combines Charged Cushioning on top of Micro G® foam for an optimum blend of cushioned support and explosive responsiveness. Full-length Charged Cushioning sock liner for moisture-wicking and comfort. Outsole: Strategically placed rubber creates excellent traction and lightweight yet durable performance.