These newest versions of one of Nike's most popular shoes have undergone a few changes. Most of these changes make the shoes even lighter in weight than they already were.More strategically placed perforations in the Engineered Mesh Upper at forefoot and foot bridge height ensure improved breathability. This keeps the feet cool and comfortable when running. The heel collar and the shoe's tongue have been made thinner without surrendering comfort. The Flywire cables, also found in the Pegasus 35, have again been used in the 36th edition of the Air Zoom Pegasus. These cables provide you with a securely enclosed and safe feel during your runs.The Air Zoom Pegasus 36 has also been provided with a full-length Zoom Air unit. This ensures a very responsive and fast feel. The Cushlon ST-foam in the midsole has been made a bit sturdier for running faster tempos, but still knows how to offer comfortable cushioning. The shoe's sockliner adapts itself to the feet for a personalized and comfortable fit. The outsole's pattern has been improved and now offers more grip and traction on different surfaces.