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GEL-NIMBUS 21

GEL-NIMBUS 21 is rated 4.1 out of 5 by 41.
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Color : ELECTRIC BLUE/MIDNIGHT

  • Size Guide
  • Width Guide

MEN'S SIZES                            
US 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12
UK 3 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11
EU 36 37 37.5 38 39 39.5 40 40.5 41.5 42 42.5 43.5 44 44.5 45 46 46.5
CM 22.5 23 23.5 24 24.5 25   25.5 26 26.5 27 27.5 28   28.5 29 29.5
WOMEN'S SIZES                            
US 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12      
UK 3.5 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10      
EU 36 37 37.5 38 39 39.5 40 40.5 41.5 42 42.5 43.5 44 44.5 45 46 46.5
CM 22.5 23 23.5 24 24.5 25   25.5 26 26.5 27 27.5 28   28.5 29 29.5
YOUTH SIZES                            
US K10 K11 K12 K13 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5 7
EU 27 28.5 30 31.5 32.5 33 33.5 34.5 35 35.5 36 37 37.5 38 39 39.5 40
CM 17 17.5 18.5 19.5 20 20.5 21 21.5 22   22.5 23 23.5 24 24.5 25  
WRESTLING                                                    
US 4 4.5 5 5.5 6 6.5 7 7.5 8 8.5 9 9.5 10 10.5 11 11.5 12 12.5 13 13.5 14 14.5 15 15.5 16 16.5 17 17.5 18
EU 34 34.5 35 36 37 37.5 38 39 39.5 40.5 41.5 42 42.5 43.5 44 45 46 46.5 47 48 49 49.5 50.5 51 51.5 52.5 53 53.5 54
CM 22 22.5 23 23.5 24   24.5 25 25.5 26 26.5   27 27.5 28 28.5 29 29.5   30 30.5 31 31.5 32.5 33   33.5 34 34.5

The standard (medium) width for women is B, while the standard width for men is D. Shoe boxes and labels will only identify widths other than standard. Within the shoes, wide and narrow widths are identified on the label, underneath the tongue — ie. T005N(2E).

When is additional width needed?
Visible stretching or bulging on the outsides of forefoot materials is a good indicator that additional width may be needed. These sizes are available in many of our Running and Training shoes. In some cases, men can wear women’s styles to achieve a narrow fit and women can wear men’s to get a wide. If this is needed, please use the references above to determine comparable size lengths. Please note that the differences of width between narrow, standard, wide, and extra wide are usually only a couple millimeters and are proportional to the size of the shoe. Most additional width will be found in the forefoot.

MEN/KIDS   WOMEN
  2A NARROW
NARROW B STANDARD
STANDARD D WIDE
WIDE 2E EXTRA WIDE
EXTRA WIDE 4E  
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1011A169.401

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Pronation

Pronation is part of the natural movement of the human body and refers to the way your foot rolls inward for impact distribution upon landing. Understanding your pronation type can help you find a comfortable running shoe. ASICS GEL-NIMBUS 21 is made for under, neutral.
  • UNDER
  • NEUTRAL
  • OVER
Underpronation (Supination)
How Your Foot Contacts the Ground
The outer side of the heel hits the ground at an increased angle with little or no normal pronation, causing a large transmission of shock through the lower leg.
Push Off
The pressure is on smaller toes on outside of foot.
Considered Injuries
Plantar fasciitis, Shin splints, Ankle strain.
Foot Type
High arches
Neutral
How Your Foot Contacts the Ground
The foot lands on outside of the heel, then rolls inward (pronates) to absorb shock and support body weight.
Push Off
There is even distribution from the front of the foot.
Considered Injuries
Less likely due to effective shock absorption, but neutral runners are not immune to injury.
Foot Type
Normal size arches

Product Details

Run further than you thought possible in the GEL-NIMBUS® 21 running shoe for men by ASICS - packed full of plush cushioning and special technologies to respond to your natural stride. The GEL-NIMBUS® 21 shoe is fitted with our I.G.S® (Impact Guidance System) technology: a construction technique that allows the shoe to respond to your natural gait. The TRUSSTIC SYSTEM® technology provides added stability so you can focus on pushing yourself further than ever. The upper is made from Jacquard mesh and will fit snugly, allowing air to flow and keep the foot fresh as you run and run. Our famous GEL® technology in the front and rear sole gives you energized cushioning in the form of shock-absorbing silicone for heavy-impact activity. Meanwhile, FLYTEFOAM® Propel technology in the midsole offers excellent bounce and toe-off. This lightweight foam formulation has a special high-energy return elastomer helping to put a spring in your step. Gain even more bounce with our SpEVA insole, which also helps the shoe last. To ensure a great fit, there's an external heel counter which holds your heel firmly, keeping you comfortable as you pound the miles. And we've added an AHARPLUS™ heel plug on the outsole to help you be able to run as long as you want. This ASICS High Abrasion Resistance Rubber is a tough rubber compound used to reduce excessive wear. If the light is dim you'll still be seen thanks to the reflective detail we've included. All of this lets the shoe take the strain so you can concentrate on what matters: your breathing and your pace. Heel Height: 23mm. Forefoot Height: 13mm.

Product Features

FlyteFoam® Propel Technology

ASICS energetic foam formulation that provides supreme bounce thanks to a unique elastomer compound.

Rearfoot and Forefoot GEL® Technology Cushioning System

Attenuates shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle.

Guidance Line® Midsole Technology

Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency.

Guidance Trusstic System™ Technology

This Trusstic System® Technology integrates Guidance Line® construction for enhanced gait efficiency while providing midfoot structural integrity.

AHAR® Outsole

Acronym for ASICS High Abrasion Rubber. Placed in critical areas of the outsole for exceptional durability.

Heel Clutching System™ Technology

Exoskeletal heel counter provides improved support and creates improved heel fitting environment.

Ortholite® X-40 Sockliner

This premium sockliner features higher rebound properties while providing excellent moisture management and a high-level of breathability (Ortholite is a registered trademark of ATP Manufacturing LLC.)

SpevaFoam™ 45 Lasting

Employs 45 degree full length SpevaFoam™ 45 lasting material for a soft platform feel and improved comfort.

I.G.S® (Impact Guidance System) Technology

ASICS design philosophy that employs linked componentry to enhance the foot's natural gait from heel strike to toe-off.

Reflectivity

Contains reflective materials designed to enhance visibility during low light hours.

FlyteFoam® Lyte Technology

ASICS lightest weight midsole formulation that provides continuous cushion thanks to organic nano fibers.

The technology in this product

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Rated 5 out of 5 by from Recommending: Great running experience Very comfortable running shoes. Used them already a few times and very pleased. One minor issue, the shoes color is very unique, spare laces would have been great add on. Should not be a big thing for Asics to add.
Date published: 2019-06-21
Rated 1 out of 5 by from NOT SATISFIED i bought these shoes approx, 3 weeks ago, I've been wearing them since the 17's love this shoe, but these are terrible. Not that comfortable, and my soles are about worn out on the bottom! Never in my life has a [air of sneakers worn out in 3 weeks. Do not recommend.
Date published: 2019-06-17
Rated 5 out of 5 by from Best Nimbus yet I have worn Nimbus shoes for the last ten years, and in my opinion the Nimbus 21 is at the top of the class. Much-improved toe box--the last several models have felt a bit tight/constraining, but the 21 feels much roomier. This shoe provides a cushion ride, without added weight. Love this shoe..plan on ordering another pair (or two)!
Date published: 2019-06-17
Rated 5 out of 5 by from New Asics Nimbus I had taken a break from running from some serious training/racing years, but ordered a new pair of Asics Nimbus and not much has changed: same Excellent ride and comfort level as before. I will not run in any other shoe!
Date published: 2019-06-05
Rated 2 out of 5 by from Not a good fit for me. I ordered the asics nimbus 21s hoping they would be better than the 20s. The platform of the shoe is too much. Great cushion but not the shoe for me.
Date published: 2019-06-02
Rated 1 out of 5 by from too hard and stiff I am so disappointed in the 21. The shoe is too hard and stiff. I keep waiting for a shoe like the 18 that I could wear all day, running, walking, working or shopping. Please consider making another shoe similar to the Cloud 18 or Nimbus 18.
Date published: 2019-05-30
Rated 5 out of 5 by from Good version - Please don't change The Nimbus 21 are much improved compared to the previous versions. Asics, please don't change the structure of this shoe as you tend to do. I'm a long time Nimbus user and appreciate when you design a shoe like these.
Date published: 2019-05-27
Rated 3 out of 5 by from comfortable but not durable I've had these for a couple months now, I'm just getting back into the swing of running regularly. I have run less than 70 miles on the road in these and the tread is almost gone in some areas. Down to the foam on my right foot. I started noticing the wear on rainy runs because i would slip on my push off. I could have received a defective pair, or I could just be hard on my shoes. I will be trying out other brands in the future after pretty much exclusively running in Asics for years.
Date published: 2019-05-23
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