Reebok ZigReetrek TR - Men'sThe Reebok ZigReetrek TR running shoe features ZigTech®, the unique zigzag shape absorbs the impact of heel strike and is designed to be more energy efficient. SmoothFit™ creates a smooth, comfortable fit with minimal potential irritation inside a light, flexible, streamlined upper. All seams are either eliminated or sealed both inside and outside the shoe creating sock-like comfort you can feel. StableFit™ offers comfort and personal fit. Forefoot flex grooves add flexibility. PU sockliner provides cushioning. Carbon rubber heel strike and active traction lug pattern provides traction for varied terrain. Removable insole. Wt. 14.0 oz.