ASICS Women's Gel-Kayano 32 Running Shoes, 8, Black/White vs Under Armour Women's Charged Assert 9, Black/White, 8.5 US
Updated August 2026 — ASICS Women's Gel-Kayano 32 Running Shoes, 8, Black/White leads on support and comfort.
The ASICS Gel-Kayano 32 offers advanced support and comfort for serious runners, while the Under Armour Charged Assert 9 is a budget-friendly option for casual runners.
Why ASICS Women's Gel-Kayano 32 Running Shoes, 8, Black/White is better
Advanced Features
4D GUIDANCE SYSTEM for adaptive stability
Comfort
FF BLAST™ PLUS foam midsole for smoother runs
Support
3D SPACE CONSTRUCTION for gait accommodation
Why Under Armour Women's Charged Assert 9, Black/White, 8.5 US is better
Price
Significantly cheaper at $57.95
Immediate Comfort
Plush step-in feel with no break-in needed
Breathability
Lightweight mesh boosts airflow during workouts
Overall score
Specifications
| Spec | ASICS Women's Gel-Kayano 32 Running Shoes, 8, Black/White | Under Armour Women's Charged Assert 9, Black/White, 8.5 US |
|---|---|---|
| Weight | Lightweight | Lightweight |
| Midsole | FF BLAST™ PLUS | Charged Cushioning |
| Upper | Engineered Mesh | Breathable Mesh |
| Outsole | Stability Focused | Flexible Tread |
| Fit | Adaptive | Plush |
Dimension comparison
Price Comparison
The ASICS Women's Gel-Kayano 32 Running Shoes are priced at $154.45, while the Under Armour Women's Charged Assert 9 is significantly cheaper at $57.95, making it about 62% less expensive. This stark price difference may draw the attention of budget-conscious runners who are seeking a balance between quality and cost. The ASICS model's higher price reflects its advanced features geared towards serious runners, while the Under Armour offers a more budget-friendly option suitable for casual engagement.
Comfort and Fit
When it comes to comfort and fit, both shoes excel in different aspects. The ASICS Gel-Kayano 32 features a 4D GUIDANCE SYSTEM designed to provide adaptive stability, which is beneficial for long-distance runners needing consistent support. Additionally, its FF BLAST™ PLUS foam midsole enhances comfort, making each run smoother. In contrast, the Under Armour Charged Assert 9 boasts a plush step-in feel with foam padding around the ankle, providing immediate comfort without the need for a break-in period. Thus, while the ASICS focuses on long-term comfort for dedicated runners, the Under Armour is ideal for those who value immediate comfort and ease.
Breathability
Breathability is a crucial factor for running shoes, and both models offer unique solutions. The ASICS Gel-Kayano 32 incorporates a lightweight engineered mesh upper designed to keep feet cool during runs, especially in warmer weather. However, the Under Armour Charged Assert 9 takes breathability a step further with its lightweight mesh that specifically boosts airflow, ensuring feet remain cooler during intense workouts. Given these attributes, the Under Armour might be the better choice for runners who prioritize ventilation during their activities.
Stability and Support
In terms of stability and support, the ASICS Gel-Kayano 32 is engineered with a 3D SPACE CONSTRUCTION feature that accommodates various gait differences among runners. This technology helps in providing a softer feel underfoot, which is crucial for those engaging in longer runs. On the other hand, the Under Armour Charged Assert 9 offers reinforced overlays that enhance midfoot support, ensuring a stable fit during light training. Therefore, serious runners might find the ASICS more suited to their needs, while casual runners may appreciate the straightforward support of the Under Armour.
Traction
Traction is vital for safety and performance, especially on varied terrains. The Under Armour Charged Assert 9 features a rubber outsole with a flexible tread pattern that promotes stability on both pavement and treadmills, making it versatile for various running environments. The ASICS Gel-Kayano 32, while not explicitly detailed on traction, is designed with a focus on overall stability and comfort, suggesting it would perform well on smooth surfaces. Thus, if your running activities include diverse terrains, the Under Armour may provide an edge in terms of traction.
Design and Aesthetics
Aesthetic appeal can influence buyer decisions, and both shoes present distinct styles. The ASICS Gel-Kayano 32 comes in a striking Black/White design, part of the SUNNY SIZZLE Collection, inspired by the colors of sunrise or sunset, which adds a unique flair. Meanwhile, the Under Armour Charged Assert 9, also in Black/White, offers a more classic look that appeals to minimalist tastes. Depending on personal style preferences, runners can choose between the vibrant design of ASICS and the understated elegance of Under Armour.
Performance for Different Types of Runners
The ASICS Gel-Kayano 32 is tailored for serious runners who require advanced support and comfort for longer distances, reflected in its sales rank of 3,805, indicating a solid reputation among dedicated athletes. Conversely, the Under Armour Charged Assert 9, with a better sales rank of 2,002, appeals to newer runners who may prioritize comfort and ease of use over technical features. This makes it an excellent choice for those just starting their running journey or engaging in lighter workouts.
Which should you buy?
Deciding between the ASICS Women's Gel-Kayano 32 and the Under Armour Women's Charged Assert 9 ultimately comes down to your specific needs as a runner. If you are serious about running and seek advanced support features, the ASICS model would be the better investment, despite its higher price. However, if you're looking for a cost-effective option that offers comfort and breathability for casual use, the Under Armour is a strong contender. Both shoes excel in their respective categories, ensuring that there's a suitable option for various types of runners.

