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Lady Isaac S

$150.00

Built for Maximum Support

The Lady Isaac is perfect for all foot types and everything from walking to moderately paced workouts. Like all Newtons it offers highly responsive cushioning to maximize ground feel and ease of transition through each stride

Lady Isaac Details

Newton Lady Isaac Specifications

specifications

  • Weight (oz): 9.1
  • Drop: 3
  • Support: Stability
Newton Lady Isaac Upper

upper

  • Light and Airy
  • Durable, Comfortable and Breathable
  • Performance Lace and Tongue System
  • Metatarsal Stretch Panel
  • Foot-hugging supportive overlays
Newton Lady Isaac Sole Technology

sole technology

  • Responsive and Agile
  • Full-Foot Newtonium Cushioning
  • Tactical Flex Grooves to Mirror Foot Motion
  • Tuned Posting to Enhance Stability

What Makes Newton Unique?

Lateral view of the Lady Isaac S

Level Platform

Over time, many shoe designs have become thicker, softer and heavier with greater heel heights. In the spirit of making every stride better, Newton shoes feature lower heel to toe drops to put you in a more natural running position.

Top image view of the Lady Isaac

Action/Reaction Technology

The secret formula powering the speed of Newton Running shoes is its proprietary Action/Reaction Technology. Generated by the active movement of the lugs, it creates a responsive, trampoline-like cushioning system that provides quicker bounce-back and loses less energy than a traditional foam-core running shoe.

Bottom view of the Lady Isaac S

Full Foot Cushioning

If you love the responsive yet cushioned feel of the lugs in the forefoot, you'll be happy to find out the same technology exists in the heel. With Newton Running, you get full-foot cushioning and protection.

What Our Runners Think

Customer Reviews

Based on 42 reviews
100%
(42)
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0%
(0)
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A
Alexandra Kusznir
Great shoe for bad arches!

I have a lot of arch pain and just started getting into running. These shoes have let me run pain free!!

A
Amanda Runs
Been waiting for these!

My previous Lady Isaacs suffered death by ceremonious defenestration after a disappointing Ironman 6 years ago. Glad they're finally back in the Newton lineup! So comfortable with great stability, especially in the beginning of marathon training when I'm building up miles.

j
jody stefanski janis

Great shoes and pretty too
I had to order a women’s size 10 in order to NOT get smashed toes while using my elliptical machine. The Isaacs are the only shoe I can wear on an elliptical machine
They have the most cushioning in the ball of the foot area which minimizes the numbing of my toes on the E machine
I think the shoes sizes run small

L
Lynda
Great Shoe! Pain free walking

Able to do my daily walks without the bottoms of my feet burning/ hurting afterwards. Feel very light & supportive.

R
Rebecca Matoska
Best shoes ever!!

I suffered from shin splints for years and tried every motion control shoe out there. These are the only shoes to ever work for me, I love them and literally can't run pain free without them!!

Customer Reviews

Based on 42 reviews
100%
(42)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
A
Alexandra Kusznir
Great shoe for bad arches!

I have a lot of arch pain and just started getting into running. These shoes have let me run pain free!!

A
Amanda Runs
Been waiting for these!

My previous Lady Isaacs suffered death by ceremonious defenestration after a disappointing Ironman 6 years ago. Glad they're finally back in the Newton lineup! So comfortable with great stability, especially in the beginning of marathon training when I'm building up miles.

j
jody stefanski janis

Great shoes and pretty too
I had to order a women’s size 10 in order to NOT get smashed toes while using my elliptical machine. The Isaacs are the only shoe I can wear on an elliptical machine
They have the most cushioning in the ball of the foot area which minimizes the numbing of my toes on the E machine
I think the shoes sizes run small

L
Lynda
Great Shoe! Pain free walking

Able to do my daily walks without the bottoms of my feet burning/ hurting afterwards. Feel very light & supportive.

R
Rebecca Matoska
Best shoes ever!!

I suffered from shin splints for years and tried every motion control shoe out there. These are the only shoes to ever work for me, I love them and literally can't run pain free without them!!