Responsive cushioning in the Pegasus provides an energized ride for everyday road running. Experience lighter-weight energy return with dual Air Zoom units and a ReactX foam midsole. Plus, improved engineered mesh on the upper decreases weight and increases breathability. Product Details Upgraded breathable engineered mesh upper ReactX foam midsole surrounds forefoot and heel Air Zoom units for an energized ride. Signature waffle-inspired rubber outsole for traction and flexibility Plush collar tongue and sockliner for a secure and comfortable fit What's new? All-new ReactX foam midsole is 13% more responsive than previous React technology. Crafted for performance and planet, ReactX foam is engineered to reduce its carbon footprint by at least 43% in a pair of midsoles due to reduced manufacturing process energy compared to prior React foam. The carbon footprint of ReactX is based on cradle-to-gate assessment reviewed by PRé Sustainability B.V and Intertek China. Other midsole components such as airbags, plates or other foam formulations were not considered. Weight: Approx. 297 g/10.4 oz Heel-to-toe drop: 10 mm MR-10 Last - Our best, most consistent fit (same as Pegasus 40) Not intended for use as Personal Protective Equipment (PPE) Fit & Care Regular Fit We don’t recommend using a washing machine or dryer to clean your shoes. Washing machines expose shoes to complete submersion and excessive agitation. Machine dryers subject shoes to excessive heat. Both can affect material integrity, shoe construction, and performance. Instead please follow the care instructions provided in Nike's Cleaning Guide.