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Men's Isaac

$83.00  $145.00

Our most cushioned model ever, the Isaac delivers a perfect balance of cushion and springiness to take make your run, walk or workout more comfortable than ever.
Note: This is a closeout and all sales are final, see FAQ for details

Sustainably Constructed, Certified Vegan


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


Men's Isaac Details

Men's Isaac

specifications

  • * Weight: 9.2oz
  • * Drop: 8.0mm
  • * Support: Neutral
  • * Certified Vegan
  • * Sustainably Constructed
Men's Isaac

upper

  • * Anatomically designed air-mesh
  • * Plush, seamless anti-friction linings
  • * Perforated tongue for breathability 
  • * Multi-positional lacing system 
  • * Upper constructed of 100% recycled materials
Men's Isaac

sole technology

  • * Energized NRG+™ Foam
  • * XPS+ Pebax® plating system
  • * Split-lug Action Reaction Technology™
  • * Hytrel® foam footbed
Learn More About Newton's Technology

What Makes Newton Unique?


Men's Isaac Side View

More Foam, More Fun

Our first super cushion shoe combines next gen NRG+™ and Hytrel® foams to minimize impact while the sculpted rocker geometry is designed to amplify forward momentum and minimize weight. The result? An amazingly soft but versatile shoe that feels just as great logging long miles as it does wearing around casually.

Men's Isaac Bottom View

Next Level Technology

The new Split-Lug Action Reaction Technology™ is designed to maximize rebound for a smoother, more energetic ride. Equipped with 8 independent flex lugs that compress and spring back like a trampoline, they reduce impact and return energy with each stride and work in harmony with the XPS+ Peebax plate to keep you stable and in total control.

Men's Isaac

Crafted For Comfort

The Adaptive-Fit seamless air mesh molds to the shape of your foot and lets air flow freely; while features like a non-friction lining and multi-positional lacing system provide the security and comfort that makes it feel like it was built just for you.

Men's Isaac
Men's Isaac

What Our Runners Think

Customer Reviews

Based on 52 reviews
87%
(45)
10%
(5)
2%
(1)
0%
(0)
2%
(1)
100.0
D
David B.
These have been great

Bought these as my podiatrist suggested them because of my Morton’s neuroma. I’ve been wearing them for about a month, along with CustomToes.com toe dividers and the pain from the neuroma is all but gone. Plan to wear these on our Viking Cruises tour of China next month!!

T
Todd H.
Newton for the win again!

I’ve been running in Newtons for years, but this is the first pair of Isaacs I’ve ever gotten. Got them for everyday use and walking, and, of course, love them as much as I love my running shoes. Love you, Newton peeps! Keep making awesome shoes!

D
Dan S.
Great Shoes!!

Very comfortable with a lot of cushion.

J
J.B.
Love these shoes

Very comfortable shoes. They allow me to run frequently without pain.

K
Kurt C.

Love them!

123

Customer Reviews

Based on 52 reviews
87%
(45)
10%
(5)
2%
(1)
0%
(0)
2%
(1)
100.0
D
David B.
These have been great

Bought these as my podiatrist suggested them because of my Morton’s neuroma. I’ve been wearing them for about a month, along with CustomToes.com toe dividers and the pain from the neuroma is all but gone. Plan to wear these on our Viking Cruises tour of China next month!!

T
Todd H.
Newton for the win again!

I’ve been running in Newtons for years, but this is the first pair of Isaacs I’ve ever gotten. Got them for everyday use and walking, and, of course, love them as much as I love my running shoes. Love you, Newton peeps! Keep making awesome shoes!

D
Dan S.
Great Shoes!!

Very comfortable with a lot of cushion.

J
J.B.
Love these shoes

Very comfortable shoes. They allow me to run frequently without pain.

K
Kurt C.

Love them!

123