Who should buy the Gel Kayano 21

The Gel Kayano series from Asics is known for its superior comfort and stability. As one of Asics' more popular and premium models, the Gel Kayano 21 is recommended if:

  • You need a cushioned running shoe with enough support for low arch, flat feet, and overpronation
  • You want a road running shoe that is ready for long-distance runs and marathons

Asics Gel Kayano 21 kayano 21

Updates to the Asics Gel Kayano 21

  • An updated upper construction provides a glove-like fit 
  • A full-length midsole foam provides a more reliable bounce 
  • A dual-density outsole unit gives a guaranteed combination of durability and strength

Asics Gel Kayano 21 updated upper

Damage-resistant outsole

AHAR or the Asics High Abrasion Resistant Rubber is a durable material that’s placed in critical areas of the shoe where wear and tear are most likely to occur. This outsole material has been used in most Asics running shoes, like the Kayano 25. It resists damage brought about by friction and continued use. It even gives reliable surface traction.

Asics Gel Kayano 21 high-wear area

The DuraSponge is blown rubber placed in the forefoot section. It adds a bit of cushioning and durable protection, making the forefoot striking and liftoff more comfortable.

Asics Gel Kayano 21 DuraSponge

Flex grooves allow the platform to be more forgiving to the natural movement of the runner’s foot. They flex accordingly when the foot is ready to toe-off.

An efficient gait cycle, guaranteed

The FluidRide features bounce-back mechanics and cushioning, which are very important when it comes to taking each step. The springy nature of this midsole unit allows the foot to move more efficiently through the gait cycle, even allowing the toe-off to be more enabled and effective.

Asics Gel Kayano 21 midsole

The Dynamic DuoMax Support System is a stability mechanism that uses a dual-density foam placed in the midfoot area of the Asics Gel Kayano 21. It holds the arch in place, preventing any unfavorable inward rolling of the foot during the gait cycle.

Asics Gel Kayano 21 Dynamic Duomax

Midsole elements for comfort

The Gel Cushioning System is made up of a silicon-based unit that is able to absorb shock during the landing phase. In this running shoe, both the forefoot and rear benefit from this add-on, which makes each step more comfortable.

Asics Gel Kayano 21 gel

The ComforDry X-40 Sock Liner adds a bit more cushioning and rebound to the immediate underfoot. It is able to manage moisture responsibly, thus keeping the platform dry and cool.

A glove-like fit with the FluidFit

The FluidFit uses multidirectional stretch mesh to wrap around the foot with ease. It doesn’t feel stiff or firm against the skin, so it fits like a glove.

Asics Gel Kayano 21 FluidFitf

The overlay system of the Asics Gel Kayano 21 uses stitched sections and parts that have been fused with the main fabric. They connect directly to the lacing system and adjust accordingly when the shoelaces are manipulated.

Asics Gel Kayano 21 overlays

The Heel Clutching System is an external heel counter that supports the rear of the foot by keeping it in place. It is helpful when it comes to preventing wobbliness and shoe removals.

Asics Gel Kayano 21 heel counter

Facts / Specs

Terrain: Road
Weight: Men 309g / Women 252g
Drop: Men 10mm / Women 13mm
Arch support: Stability
Update: Asics Gel Kayano 28
Collection: Asics Gel, Asics Gel Kayano
Pronation: Overpronation

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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.