The Liberate NITRO 2 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. This version has a unique colourway in celebration of our 75th anniversary. Liberate Nitro 2 Run 75 Running Shoes