Saucony Lady Grid Guide Trail Running Shoes Heel ProGrid - Saucony's top of the range cushioning system. ProGrid absorbs impact and di SRC Impact Zone - This decreases the shock when landing or taking off. Midfoot Arch Strap - Helps to keep the foot in place and avoid slippage. EBO Protect Plate Dual Density Midsole - A firmer density of EVA located on the medial side of the midsole t