Verdict from +100 user reviews

5 reasons to buy

  • The in-shoe experience given by the Asics Gel Nimbus 21 Winterized is considered snug yet homey.
  • Some have stated that the cushioning system is responsive enough to maintain comfort throughout an entire day.
  • The grip that is afforded by the outsole is deemed dependable and consistent.
  • Several testers have taken notice of the multilayered upper that allows them to tackle cold conditions with ease.
  • The durability of the materials used for this Asics running shoe is lauded by consumers.

2 reasons not to buy

  • A few testers believe that the inner walls of this product are a bit too snug for the foot to relax.
  • A stuffy in-shoe experience is felt by some runners who lamented the cold-weather-specific configuration of this shoe.

Bottom line

All-in-all, people like the Asics Gel Nimbus 21 Winterized. This road running shoe has a design that is deemed durable and accommodating. The shoe offers a cold-optimized upper configuration upper, as well as a reactive platform. These elements are ideal for neutral runners looking to enjoy their activities in wintry conditions.

Tip: see the best running shoes.

Good to know

  • Holding back the frigid conditions that come with the winter season is a task that is placed upon the Gel Nimbus 21 Winterized. This special edition of the Asics Gel Nimbus 21 is designed to keep the foot warm with multilayered fabrics and thick in-shoe padding. It also has a platform that can propel the foot forward with energy.

The Asics Gel Nimbus 21 Winterized is a product that utilizes the standard sizing schemes. Runners are open to considering their usual choices of size when it comes to vying for a pair. However, it would be wise to personally test the shoe first or study user reviews to achieve a correct in-shoe feel.

The inner walls of this product are meant to house the natural outline of the foot. Although, it should be remembered that extra layers of fabric are used to stave off cold, so the in-shoe experience might be affected by such a design.

The external pad of the Asics Gel Nimbus 21 Winterized is made of AHAR® or Asics High Abrasion Rubber. This technology is meant to protect the base of the midsole from the debilitating effects of surface contact and continued use. It is touted to last long because it apparently doesn’t wear off quickly.

Flex grooves near the forefoot section have the job of making the platform as flexible as possible, energizing the toe-off in the process. A smooth and well-rounded gait transition can be appreciated because of this feature.

A full-length FlyteFoam® Propel foam offers energy-returning cushioning throughout the running session. The springiness of this material permits the foot to spring off the ground during the toe-off phase. Its durable construction also supports the foot and keeps it engaged.

FlyteFoam® Lyte is placed in the heel section. This feature is made of organic nanofibers that don’t easily lose structural integrity. Consistent cushioning and impact protection govern the inclusion of this accouterment.

Gel® units are wedged in the heel and forefoot of the platform. This silicon-based technology is responsible for absorbing most of the impact forces generated by the foot-strike, then transferring the energy to the foot for extra oomph to the performance. Gel® is an Asics staple, and it’s used in many well-known series like the Gel Kayano and the Gel Cumulus.

A double-layered mesh is used for the upper unit of the Asics Gel Nimbus 21 Winterized. The use of multiple layers aims to combat the cold that comes with winter. Also, small debris won’t be able to enter the foot-chamber because of the shield-like nature of the net.

The collar and tongue feature dense padding meant to maintain a warm in-shoe experience. These parts of the facade are also tasked with preventing in-shoe wobbling and accidental shoe removals.

A bevy of printed overlays graces the exterior silhouette. These elements bolster the durability of the fabrics while also maintaining the upright position and shape of the upper unit.

An external counter is stitched to the rear of this running shoe. The purpose of this add-on is to hold the heel in place and keep it steady throughout the running session.


How Asics Gel Nimbus 21 Winterized ranks compared to all other shoes
Bottom 38% road running shoes
All road running shoes
Bottom 42% Asics running shoes
All Asics running shoes
Bottom 39% neutral running shoes
All neutral running shoes


The current trend of Asics Gel Nimbus 21 Winterized.
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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.