The Adidas Adizero Middle Distance 2 Running Spike has been designed to enable the wearer to gain instant, effective traction whilst delivering the cushioning and comfort required for middle distance running. An airmesh upper and perforated inlay allow air to fully permeate the shoe, thereby promoting a cooler, drier and altogether more pleasant environment that is free from blisters; the upper's interior is lined with a soft, synthetic microfibre that encases the foot with a soft, glove-like fit. SPRINTWEB overlays straddle the upper, in turn reinforcing the spike's construction and resistance to breakage without adding weight or seconds to your time. Six replaceable spikes bite into the track, delivering instant traction and acceleration, whilst the lightweight PEBAX plate they are attached to toughens the shoes' construction and torsional stability. An EVA insole cushions the foot and attenuates shockwaves superbly whilst a non-slip interior lining prevents the foot from sliding excessively inside the shoe, thereby preventing the blistering and discomfort that can occur from the repetitive, relentless nature of distance running. A COOLEVER mesh and lining utilise a clover shaped yarn that manages the wearer's temperature and moisture output superbly, facilitating a more comfortable, focussed run.