REVIEW: ASICS Skysensor and Tarther Japan
The Japan series of ASICS shoes enjoy the kind of loyal
following unheard of among other sports brands, to the extent that everything
underfoot (i.e. midsole and outsole) have remained largely unadulterated for
over a decade. After all, you don’t fix what isn’t broken. The Japan series
shoes are in fact made in Japan; everything from overlays to SpEVA foam production.
This is in contrast to their mass market shoes which are mostly made in China.
I was very excited to try out these two shoes because they were supposed to have a bouncier and more responsive feel compared to their non-Japan equivalents, i.e. Skysensor Glide and Tartherzeal.
The main thing that puts people off is probably the price. The MSRP of the Skysensor is S$399 and that of the Tarther Japan is S$369 a pair. That is exceedingly exorbitant for running shoes, by any stretch of the imagination, though it is rumoured that the retail price might be dropped to a more competitive price point in the near future.
Both the Skysensor and the Tarther are near identical in
construct, the main difference being in the outsole, and therefore they are
near identical in terms of weight and fit. I have now put in enough miles in
both shoes to discern the subtle ride differences between these two shoes.
Both Skysensor and Tarther come in at very competitive weights, and they have a drop of 10mm at the midsole. ASICS tends not to focus on stack height (aka heel-toe drop) because the drop is dependent on shoe size, i.e. a small shoe will have a lower drop then a larger size. This is a geometrical inevitability, though other brands prefer to use a standardized US9 for measurements. It's just different ways of standardizing measurements.
FIT AND UPPER
Both shoes use the exact same last and upper construct, and
so I will discuss them as one shoe. The first thing you will notice is that the
upper is relatively high volume, especially compared to other ASICS shoes in
the same category e.g. Tartherzeal. I have low arches and relatively wide feet,
and I feel that I can confidently tighten down the laces without experiencing
any discomfort in my mid-foot in both these shoes.
The upper of these shoes is
composed of a very breathable mesh that does an excellent job of venting the
feet, and it does this without feeling flimsy or overly compromising the
overall structure of the shoe.
Even the tongue is sufficiently padded to prevent any irritation from the laces.
There relative lack of overlays at the
forefoot areas, combined with the large shoe volume allows for plenty of room
for the toes to splay naturally during the gait cycle. The majority of the
overlays are composed of smooth suede fabrics that give a very luxurious feel,
while at the same time I subconsciously tried hard not to get them overly dirty
during my runs.
The heel counter felt slightly roomier than the typical Tartherzeal/DS Racer heel counter as well though it did seem to have a bit more padding, but nothing that some attention to lacing couldn’t take care of.
I should add that the models I got are the “regular” width
version, and a “slim” and “wide” version is available to cater for different
preferences in terms of forefoot width.
Note that in Japan, “wide” does not equate to a 2E width shoe; these shoes have
a wider forefoot but the same width heel and midfoot across the board, and the
same applies to the “slim” version.
One thing I noted, and this appears to be
true for the few shoes I bought from Japan, is that the shoes tend to come with
cotton laces. Cotton laces have their pros and cons in my book. On the plus
side, they have an inherently higher friction surface so that when you tighten
the laces, they tend not to come undone, and this gets better when they get
damp from water/sweat. Their main downside is that there is a higher tendency
to pick up sweaty odours over time, they weight somewhat heavier than their
synthetic counterparts, and they are firmly in the inelastic category. I think
cotton laces probably work very well in a cool temperate climate, but may be
worth swapping out for the heat and humidity that we face in Singapore.
It did take me a few runs and modifications to get the right fit for these shoes. One of the things that worked for me was swapping out the stock insole for a more padded one. The stock insole is a minimalist one with nicely interspersed ventilation wells, and might well be the preferred choice for race day use, but for my purposes as an uptempo and longer run shoe, I preferred a more padded insole. The more padded insole also served to reduce the shoe volume a little and offer a more snug fit. One thing you can make out from the insole is that this shoe works very well for people with low arches, which is difficult to find among racing shoes.
MIDSOLE
Both Skysensor and Tarther Japan use the same midsole
compound, which is a form of full-length SpEVA foam. This foam appears to be
denser than the foam used in the Tartherzeal, and offers a more bouncy and
responsive feel. Denser foam is more durable, but also heavier, and that
accounts in part for a slightly heavier weight of the Tarther Japan when
compared to a Tartherzeal.
One slight difference I noted between the Skysensor and the
Tarther is that in the midfoot section, the Tarther has had more of the foam
removed and replaced by a plastic bridge that serves to stabilze the arch.
This, I believe, accounts for part of the weight difference between the
Skysensor and the Tarther. This feature is also seen in quite a few of the
Sortie and DS racer models. The drawback of this is the lack of full ground
contact, which may or may not be of much consequent for the fast paced running
this shoe is designed for.
OUTSOLE
The Tarther Japan uses a typical combination of polyurethane
contact points (coined DuoSole by ASICS) in the forefoot and carbon-injected
rubber in the heel. This combination is seen in quite number of their racing
models, and provides excellent forefoot traction for toe-off
and good
durability in the heel. DuoSole is a dense and firm compound and
gives a solid ground feel, though this is muted somewhat by the ample SpEVA
midsole foam in the heel.
Contrast this to the Skysensor Japan, which adopts a blown
rubber approach for most of the fore- and mid-foot coverage, and defaulting
again to carbon-injected rubber for the high wear heel region.
RIDE QUALITY
Note the toespring of the Tarther Japan |
What these differences translate to in real-time, is greater
forefoot traction but also less durability for the Tarther, while the Skysensor
provides more wear life with its blown rubber outsole. Another thing I noted is
that the Skysensor feels less flexible underfoot than the Tarther, which flexes
more easily in the midfoot and forefoot section. I put this down to A) the
blown rubber on the skysensor making the shoe more rigid, and B) the thicker midfoot
SpEVA foam in the Skysensor midfoot (vs the cut-out seen in the Tarther).
Beyond these subtle differences, both shoes feel very similar in terms of
cushioning. Both have a very smooth heel to forefoot transition especially at
faster tempo paces, and the greater forefoot traction of the Tarther really
shines through once you get to <4:00 pace.
The only minor drawback of these shoes is that they can feel
rather firm when used for slower, longer runs, more so for the Tarther than the
Skysensor. That said, these two models were designed as uptempo trainers/racers
and should be judged as such. If you could only have one do-it-all type of
shoe, then the Skysensor Japan is probably your best bet, as it can handle a
wide range of paces and affords better durability. For a long distance racing
shoe, the Tarther Japan is a better choice, simply because the better
flexibility and forefoot traction tends to give a racier feel.
After about 200km in the Skysensor Japan, you can see there is some wear on the red blown rubber lugs but by and large, there is still plenty of outsole rubber left and i fully expect another 3-400km in the shoes easily, which is more than what one would reasonably expect from a lightweight racer/trainer.
FINAL THOUGHTS
The 220-230g range is extremely competitive, and is the sweet spot for marathon racers, for which these two shoes are prime candidates. Other shoes within this weight range include the Adidas Adios Boost, Mizuno Wave Hitogami, Nike Flyknit Lunar3 and the NB Fresh Foam Zante. Ultimately everyone has their preferred firmness of shoe for racing. Within this list, the Hitogami is the firmest, and the Flyknit Lunar3 is the softest. The Skysensor/Tarther sit somewhere in the middle of this spectrum. If you are looking for a durable lightweight trainer or marathon racer, this could be the shoe for you, especially if you desire a shoe without too much arch structure and higher shoe volume.
Really awesome. I'm browsing the ASICS Japan website and was amazed by their racing flat lineup. Their wide version (wide forefoot/same heel) seems perfect to my feet.
ReplyDeleteThanks for reviewing such nice (and rare) shoes.
I bought 2 pairs of Japan Tarther in Japan at 150 SGD each which is MRSP. We are getting ripped off in Singaoire
ReplyDeletesorry i missed this comment. I think in Japan the MSRP is closer to S$200, but yes local prices are quite steep. I am told that ASICS Singapore are planning to revise the retail prices to be more in line with the prices in Japan. We will have to wait and see
Deletehow do u compare tartherzeal vs tarther?
ReplyDeletehow do u compare tartherzeal vs tarther?
ReplyDeleteThese are very different shoes. The tarther will feel more like a lightweight trainer compared to the Tartherzeal. Almost 50% difference in weight. Tartherzeal at 170+g vs Tarther at 220g.
DeleteThanks for sharing your great experience! I am so happy and aggree with you. Please keep up it in future! Hedge Trimmer Reviews
ReplyDeleteThank you so much for your reviews. So hard to find any infos of these bad boys, the Godzilla of running world, it's like comparing them to Nissan GTR the super car killers. Skysensor the breaking 2 and 4% zoomfly killer? .....Yuki Kawauchi.
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Thanks for sharing your great experience! I am so happy and aggree with you. Please keep up it in future!
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