The GT-2000™ 15 is designed to help provide a more energetic ride in a stable running experience. A softer formulation of FF BLAST™ MAX cushioning is met with an extra 2mm of foam in the midsole. It's designed to help generate cloud-like softness during the landing phase and is followed by a more energetic bounce at toe-off. This shoe maintains it's stability through the 3D GUIDANCE SYSTEM™ which helps provide adaptive, on-demand support for a smooth and balanced stride.