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Men's Isaac S

$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.

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

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 12 reviews
100%
(12)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
C
C.E.
Best shoe ever!

Best shoe ever!
Comfortable from the moment you first put them on.
Great stability!
Please continue to make the Sir Isaac!!

A
A.S.
Top Notch

Normally I don't write review, Am so glad I discovered Newton running shoes (a year a go). My running/walking have been more enjoyable than ever. I cannot see myself buying any other brand. Thank you Newton, keep Pushing the limit.

L
L.D.
Sir Isaac S

Great shoe! So glad they brought them back

C
C.P.
Best Shoes Newton Makes!

I ran in the very first version of these back in 2012-ish and then they quit making them. I switched to some NRG II but didn’t like them as much. Was at the store in Boulder back in late-2018 and they said they had some from a limited run so I bought 3 pair of my size. Just saw they’re being made again, which is perfect timing for my wear schedule, so I bought two more!
I have long, skinny, flat feet and tried many other brands in the past prior to finding Newton’s and I’ll doubt I’ll ever use another brand again.

S
S.H.
Isaac Running Shoes

Great shoe! Just back into running after back surgery and they feel great. I have tried several other brands and they did not feel right. Glad I went back to running in Newton’s! Thank you

Customer Reviews

Based on 12 reviews
100%
(12)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
C
C.E.
Best shoe ever!

Best shoe ever!
Comfortable from the moment you first put them on.
Great stability!
Please continue to make the Sir Isaac!!

A
A.S.
Top Notch

Normally I don't write review, Am so glad I discovered Newton running shoes (a year a go). My running/walking have been more enjoyable than ever. I cannot see myself buying any other brand. Thank you Newton, keep Pushing the limit.

L
L.D.
Sir Isaac S

Great shoe! So glad they brought them back

C
C.P.
Best Shoes Newton Makes!

I ran in the very first version of these back in 2012-ish and then they quit making them. I switched to some NRG II but didn’t like them as much. Was at the store in Boulder back in late-2018 and they said they had some from a limited run so I bought 3 pair of my size. Just saw they’re being made again, which is perfect timing for my wear schedule, so I bought two more!
I have long, skinny, flat feet and tried many other brands in the past prior to finding Newton’s and I’ll doubt I’ll ever use another brand again.

S
S.H.
Isaac Running Shoes

Great shoe! Just back into running after back surgery and they feel great. I have tried several other brands and they did not feel right. Glad I went back to running in Newton’s! Thank you