Asics Nimbus 21 SP Ladies Running Shoes. Asics Nimbus 21 SP Ladies Running ShoesThe Asics Nimbus 21 SP Ladies Running Shoes are engineered for distance thanks to the neutral Pebax Trusstic System that enhances midfoot strength. These ladies running shoes feature GEL cushioning to the rear and forefoot for super smooth transitions and impact absorption.> Ladies running shoes> Lace-up> Two layer jacquard mesh> Orholite collar sponge> Rear and forefoot GEL cushioning> FLYTEFOAM Propel top layer> FLYTEFOAM Lyte bottom layer> Moulded EVA sockliner> Guidance Line> SpEVA 45 lasting> Neutral Pebax Trusstic> External clutch counter> AHAR outsole with AHAR+ heel plug> Synthetic / textile upper, Textile inner, Synthetic sole