The KD 17 uses a large forefoot Zoom Air unit for “pop” when you drive or push off. 
• In the heel there’s a Nike Air / Air Strobel style cushioning to provide impact protection and comfort. 
• The outsole pattern is described as a “topographical map” of ridges designed to better grip when you cut or change direction quickly. 
• For stability: There is a supportive piece under the arch and some forefoot plastic/TPU overlays to help with containment. 
• The fit is snug / performance-oriented: Reviewers say it fits true to size but the toebox is a bit narrow.