The FFX honours FitFlops' design heritage while looking forward to the future with a high-tech design biomechanically engineered for casual running, gym, or everyday activity.The engineered stretch knit uppers of these women's Vitamin FFX knit shoes have been finished with silver reflective yarn for low light visibility with added support at the sides and contoured footbeds for superb arch support, combined with Neodynamic midsole technology light, high-rebound, impact-reducing cushioning, with a springy central carbon plate that propels you forward and smooths out movement heel to toe.The super lightweight and flexible design of the Vitamin FFX are a highly popular choice for those seeking luxury whilst on the go.- Slip on construction with lace up design for a personalised fit- Engineered stretch knit upper- Refelective detailing- Neodynamic cushioning technology- Contoured comfort footbed- TPU heel clip helps stop foot rolling- Internal 'flex grooves' help feet move naturally- Slip-Resistant Rubber outsole - FitFlop branding throughout