Yeah totally with you on that. I always used to have two brands on the go for that very reason. But lately the Nike deals have been really good and it (so far) totally eliminates any concerns over fitting my stupid hobbit feet. Every Nike pair I get, just fit me.
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Hereâs a questionâŚ
If sat unused, does a shoes foam determinate naturally over time?
Similar to @Poet, I have a few pairs sat unused. The infrequent times I do slip them on, the foam seems to have significantly deteriorated over time.
Thoughts?
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I know with coveted sneakers (like the Paris Dunks) the white sole outer yellows.
As for the foam deteriorating with zero use?
How?
Itâs plastic. Under zero load 
Iâm just asking here!
If they do, then show me how (preferably, using #ScienceFacts 
)
ALSO: @gingerbongo and @GRamsay - Iâve so many pairs of trainers as a lot of them were 25-40% off. So I stockpiled them. I now have enough and actually canât justify anymore 
A few of them were ÂŁ55.56 for ÂŁ140RRP trainers 
I tried Nike running shoes in 2013 when I was doing parkrun in 24-27mins, and hated them. Super narrow and really âplasticâ feeling (slippy sole, shiny polyester upper)
Theyâve come on so well and produce great shoes now. Athlete feedback and all that jazz 
In retrospect, I do wish Iâd bought the custom Next2% with the waffle tread, FlyKnit upper and toggle laces 
Suggests, these factors for the aging of foams:
âOver the course of time, mechanical dynamic load (fatigue), oxidation processes, temperature, exposure to UV light (photooxidation)â
Whilst you wonât be getting any dynamic loaing effect, the oxidation processes will surely still be happening?
Now the react foam on a nike, may not be the same as other rubber foams, but I still think there are certainly aging processes other than fatigue, itâs just quantifying how much.
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Hmm ⌠I asked for #ScienceFacts
This appears to be actual facts 
EDIT: the oxidisation is the âyellowingâ I described earlier. But also similar to what you get on old Porsche/Capri foam spoilers. When they go brittle. But thatâs 30+ years old rubber
Kept outside etc etc.
Not in a shoe box.
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I asked the same question last month here, everyone said they donât deteriorate.
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Just to update, having done nothing I finally had a chat with Nike today about the popped air pod on my Tempo Next%. They confirmed they have a 2 year warranty, so after I ship them back for free, theyâll inspect and refund them.
Given I paid ÂŁ90 in the sale Iâm a bit gutted since, itâll cost a lot more to replace. They said they only replace within 30 days.
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Keep kicking off on the chat (or email) and they will give it. It might take a few goes though
Ohhh fark. I binned my latest pair that popped. However they were probably verging on 2 years old.
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I have a pair of VF4% that have been sat in a dark corner unused since 27 July 2019 (IM Hamburg). Only 84km on them; I assume they are still thereâŚ
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Think Iâve worn mine maybe once since the same race as well
Still covered in dust.
Not quite as comfortable to walk in 
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I had the same issue with them and got the same response. Was similarly dissappointed having paid ÂŁ100 for them and therefore not able to directly replace.
However they issued the refund pretty sharply, and I look at it as having had a good training shoe for 18months at no cost!
Iâve been intermittently using some Tempo NEXT% since Aug 21; ÂŁ66 on EBay. Still going strong. A lot of my running is off-road around here tbh, so they donât get used an awful lot.
Is that per shoe?
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Doesnât quite work with 1 pair, you need to buy 2 pairs 
âHow many pairs of shoes did you buy?â
â1â
âHow much did they cost?â
âÂŁ32.99 eachâ
âHow much??? Right thatâs your Christmas presents taken care of for the next 2 years etcâ
versus:
âHow many pairs of shoes did you buy?â
â2â
âHow much did they cost?â
âÂŁ32.99 eachâ
âWell, thatâs not too bad I supposeâ
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Iâve been running in these for about 3? Weeks now
Seen a definite jump up performance / efficiency wise, my last Nikes are in the bin, Iâm not 100% sure weâre these came from?
Anyone know what they are called?
Is there a carbon plate in them ?
Any info greatly recieved, I think I got them in a deal off flea bay but there are no Names on them ?!?
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Maybe Zoom Fly Nike Zoom Fly Review, Facts, Comparison | RunRepeat
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Cheers
I did spend some time looking⌠they all look â similarâ but I obviously want to buy another pair of these.
Yeah theyâre all very similar. The sole is the same as my pair of Nike Zoom Fly Flyknit, but they have different upper material
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