Updates to Saucony Zealot ISO

  • The midsole of the Saucony Zealot ISO feature the new and enhanced PWRGRID+ platform that delivers 20% more cushioning than the regular midsole for a more resilient ride. This enhanced platform is also more durable and reliable.
  • The shoe also uses the updated ISOFIT technology the delivers an impressive fit and comfort to runners. It is highly stretchable and flex naturally together with the foot’s natural movement. This element gives a sock-like and ultra-soft feel.

Size and fit

The Zealot ISO is available in true to size measurements. The heel, midfoot and forefoot are of standard measurements. Those runners with regular foot shape and size will experience a great fit on this shoe.. The Zealot ISO is available in standard widths of D for the men’s and B for the women’s.


The XT-900 technology was extended all throughout the outsole to deliver durable traction on the road. The forefoot area also uses the IBR+ technology, a flexible and lightweight material that offers added cushioning and responsive ride. The IBR+ and the XT-900 are outsole materials that are also utilized in the Saucony Zealot ISO 3


The shoe uses the Saucony’s PWRGRID+ technology that offers added cushioning for underfoot protection. This is also engineered to deliver impressive shock absorption and efficient energy-return for a more resilient running experience. With the SRC Impact Zone, a smoother heel-to-toe transition is not impossible.


The upper of the Saucony Zealot ISO features the stretchable ISOFIT mesh that delivers impressive fit by following the foot’s movement and shape. This perfectly matches with the shoe’s open toe box design that delivers a seamless construction, enhancing sock-like feel and comfort. The brand’s RUNDRY collar lining secures the heel while maintaining its moisture-wicking attributes.


How Saucony Zealot ISO ranks compared to all other shoes
Top 24% road running shoes
All road running shoes
Top 36% Saucony running shoes
All Saucony running shoes
Top 22% neutral running shoes
All neutral running shoes


The current trend of Saucony Zealot ISO.
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Jens Jakob Andersen
Jens Jakob Andersen

Jens Jakob is a fan of short distances with a 5K PR at 15:58 minutes. Based on 35 million race results, he's among the fastest 0.2% runners. Jens Jakob previously owned a running store, when he was also a competitive runner. His work is regularly featured in The New York Times, Washington Post, BBC and the likes as well as peer-reviewed journals. Finally, he has been a guest on +30 podcasts on running.