About Nitro Welcome To A New Era Of Performance Footwear With The Puma Nitro. This Technologically Advanced Shoe Features Our Innovative Foam Technology, Engineered Via A Supercritical Process, Making It 50% Lighter Than Standard Eva And 35% Lighter Than Pro-Foam Lite. The Result Is A Shoe That Delivers Superior Responsiveness, Exceptional Cushioning, And Unparalleled Lightness, Enhancing Your Running Performance. Puma Nitro's Groundbreaking Design Assures An Effortless Ride, Transforming Your Running Experience With Every Stride. Product Story The Liberate Nitro 2 Women's Running Shoes Is A Fast Option For Your Short Distance Runs And Races. It's Lightweight, Flexible, And Leaves You Free To Push The Limits. A Simplified Mono-Mesh Upper Is Teamed With A Firmer Nitro Foam That's More Responsive Than V1, Resulting In A Shoe That's Built For A Tempo Run And Distances Up To A Half Marathon. Features & Benefits Nitro: Advanced Nitrogen-Injected Foam Designed To Provide Superior Responsiveness And Cushioning In A Lightweight Package Puma Grip: Durable Performance Rubber Compound Designed For All-Surface Traction. Details Heel Type: Flat Shoe Width: Regular Fit Shoe Pronation: Neutral Heel-To-Toe-Drop: 6 Mm Built For An Average Running Distance Of Up To 500 Km Lightweight Mono-Mesh Upper Reflective Design Elements Tpu Heel Spoiler Cushioning Level: Low Runner Type: Frequent.