Women's Isaac S

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The Lady Isaac S is back by popular demand! As our most structured and supportive shoe it's ideal for walking, running, or anything in between. The Isaac S is for runners who want stability in a responsive, maximally cushioned ride.

Product Details

  • Item number • W011418
  • Weight • 9.2
  • Platform • 4 lug
  • Heel-to-toe drop • 4.5mm
  • EMB • No


Highly-breathable closed mesh

Slip-proof laces with heel-securing double eyelets

Lightweight ergonomic support strapping

Metatarsal stretch panels for foot adjustment

Reflective logo and heel tab

No animal products were used in the making of this shoe


Durable high-traction lugs

Increased toe spring

Pronounced heel rocker

High-wear carbon rubber with traction tread


High-rebound EVA

Action/ReactionTM technology in the midfoot and heel

Midfoot support chassis for added stability

Medial posting to offset pronation

Beveled heel and toe

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1 Customer Reviews

Best Running Shoe
Was turned onto Newton Running shoes back in 2012. Bought my first pair of Lady Isaac shoes and fell in love with them. I did not know what I was missing. These shoes supported my foot and gave me a better feel for my form. I was able to run my 1st 1/2 marathon in them without any issues. I am a size 7 but the sales rep told me to go a full size up. Boy were they right!!! However if you are going to run for distance, do not hesitate to go 1 and 1/2 sizes up to accommodate for the swelling of your feet. The new model I got last year is wonderful, however the toe guard started to feel, and I feel like the materials are a little less than par for quality. Perhaps my 3rd pair will be the best yet. We shall see! I definitely recommend this shoe!!!
June 23, 2018