The Newton Motion IV stability ladies' running shoes deliver great performance mile after mile on daily runs, training & for racing. The built-in extended medial bridge provides good stability & support for pronating runners or those with flat arches. The 196g (6.9oz) stability shoes help you run more efficiently thanks to Action/ Reaction technology: reusing energy absorbed from shocks to push you onwards. Ride from the P.O.P 1 platform is responsive & light & the biomechanical metatarsal sensor plate boosts underfoot feel & efficiency. The seamless mesh upper allows good air circulation & features 360 degree reflective material & a modified metatarsal & instep Flex Zone.