Newton Lady Isaac running shoes for women. UPPER Highly breathable, fast-drying, closed mesh Slip-proof laces with heel-securing double eyelets Lightweight ergonomic support strapping Metatarsal stretch panels Reflective logo and heel tab MIDSOLE Single-density, high rebound EVA that stabilizes all foot types Second generation Action/Reaction Technology™ forefoot and heel Midfoot/rearfoot support chassis for added stability Beveled heel and toe Met-flex enhanced forefoot flexibility Enhanced sock-liner that increases energy return and protection Accommodates orthotics OUTERSOLE Second generation durable, high traction actuator lugs Increased toe spring Pronounced heel rocker High-wear carbon rubber with traction tread