ZoomX foam and full-length plate optimize energy return. The Dragonfly is for the cross-country barrier-breakers, the flurry-finishers who refuse to give in to the elements. It's our fastest distance spike on the track built to go off-road. ZoomX foam adds a jolt of energy return while a wider base helps give you peace of mind in inclement conditions. Speed up the Tempo - The combination of full-length ZoomX foam and a full-length plate optimizes resiliency and energy return while staying lightweight. Stay Dry - The partial Vapor Weave upper helps keep the shoe light even when wet. The soft, engineered mesh toe box helps keep your toes and forefoot comfortably contained. Stay Secure - An added arch band helps give you a secure fit in muddy conditions and a supportive feel on uneven terrain. Wider Base - Extra width on the base of the shoe provides extra stability and confidence on all surfaces.