- The GEL-NIMBUS 24 shoe offers advanced impact protection for your distance training. Creating a softer landing in every step, this shoe is also approx. 20g lighter than the previous version. The upper"s soft engineered mesh and flexible midfoot panel make these shoes more comfortable during long runs. By moving seamlessly with your foot, they help your stride feel smoother in every step. FF BLAST PLUS cushioning keeps the shoe lightweight while providing a softer feeling underfoot. This material also helps increase the shoe's rebound properties at the toe-off stage.