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Men's Isaac S

$120.00  $150.00

Built for Maximum Support

The Isaac S 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.

Sustainably Constructed, Certified Vegan


New to Newton? We fit snug for most. Add a 1/2 size for best fit. (US Sizing Displayed)


Sir Isaac S 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
Learn More About Newton's Technology

What Makes Newton Unique?

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.

 

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.

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 30 reviews
100%
(30)
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J
Judith Harper
The best

These are the only running shoes I’ve worn for 11 years. I get either these or the lady isaacs

C
Chris Kehler

I've purchased well over 10 pair of these shoes. Totally satisfied. I hope Newton never discontinues them. These are the only running shoes I have purchased in years.

A
Aaron Klish
Amazing

Love the support and lower drop. I wish Newton kept making them.

P
Patrick Lawless

Second pair of Isaac's. Love the sturdiness, and stability they give.

i
issac

these are my shoes and i have made and 10/10 item for anyone who wants to be comfortable and fast (look kind of ugly not going to lie but something you’ll have to deal with )

123

Customer Reviews

Based on 30 reviews
100%
(30)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
J
Judith Harper
The best

These are the only running shoes I’ve worn for 11 years. I get either these or the lady isaacs

C
Chris Kehler

I've purchased well over 10 pair of these shoes. Totally satisfied. I hope Newton never discontinues them. These are the only running shoes I have purchased in years.

A
Aaron Klish
Amazing

Love the support and lower drop. I wish Newton kept making them.

P
Patrick Lawless

Second pair of Isaac's. Love the sturdiness, and stability they give.

i
issac

these are my shoes and i have made and 10/10 item for anyone who wants to be comfortable and fast (look kind of ugly not going to lie but something you’ll have to deal with )

123