Independent lab measurements for the four ASICS running shoes we stock — weight, stack height and drop, measured rather than listed, so you can match a shoe to how you actually run.
6 August 2026 · Prices and stock live from our catalogue · Lab data from RunRepeat and Doctors of Running
ASICS Novablast 6 — the highest-scoring shoe of the four on independent testing.
How to read the numbers below
You will see two figures for some specs. Brands publish stack heights and drops measured to their own internal standard; independent labs measure the finished shoe to World Athletics protocol, at 12% and 75% of the internal length. Small differences between the two are normal and appear across every brand — it is a difference of method, not of quality. We show the measured figure because it is the one you can compare like-for-like between shoes.
Buy it if The stability option, and an excellent walking and standing shoe.
Look elsewhere if you run neutral and want light and fast — at 298g this is the heaviest here, because stability structure adds weight.
₹16,999 · 57 pairs in stock · Daily + walking · energy return low
What the numbers mean
Stack height is how much foam sits between your foot and the road. More is softer and more protective; less gives you better ground feel. Anything from 35–40mm counts as max-cushioned — three of these four sit there.
Drop is the height difference between heel and forefoot. Higher drop shifts load toward the knee and away from the Achilles; lower drop does the reverse. It is the spec most worth getting right if you have a history of calf or Achilles trouble.
Energy return is how much of the force you put in comes back. The Nimbus and Kayano both test lower here, which is the trade-off for their cushioning and support — they are tuned to absorb impact. The Novablast returns noticeably more, which is why it is the one rated for tempo work as well as daily miles.
Buy the shoes in this comparison
Each model page shows every colourway we currently hold in UK sizes. The direct link beside it goes to the colourway with the deepest stock at the time of writing.
On independent lab testing the Novablast 6 scores highest of the ASICS range at 93/100, ranking in the top 2% of all running shoes tested. It is the lightest here at 249g while still carrying a 39.2mm heel stack, which is why it handles both easy miles and faster efforts.
What drop is the Gel-Nimbus 28?
Independent lab measurement records 5.2mm, measured to World Athletics protocol on the finished shoe. That makes it the lowest-drop shoe of the four here, which suits midfoot and forefoot runners. If you want a higher drop — often preferred by heel strikers, or to reduce load on the Achilles — the Kayano 33 measures 8.5mm.
Kayano or Nimbus — what is the actual difference?
The Kayano is the stability shoe and the Nimbus is the neutral max-cushion shoe. If your ankles roll inward when you run, the Kayano's wider heel base and FluidSupport frame are built for that. If they do not, the Nimbus gives you more cushioning for 20g less weight.
Are these shoes good for the Indian climate?
Mesh uppers on all four handle heat reasonably. Reviewers note the Kayano 33 runs warmer than the rest because its tongue has minimal perforation, which is worth knowing if you run through a Delhi summer.
What size should I order?
We list UK sizes, the same as Amazon India. All four run true to size. For ASICS men's, UK 9 equals US 10 — one full size below the US number.
Sources. Lab measurements — weight, stack height, drop, energy return — are from RunRepeat, who cut each shoe in half and measure to World Athletics rules. Wear-testing commentary is from Doctors of Running, a team of licensed physical therapists. Neither is affiliated with FlexX, and we have no commercial relationship with either. Where lab-measured figures differ from published specs, both are shown so you can compare shoes on a consistent basis.