List of Boost-ish TPU midsole running shoes. Whatcha got?

theJeff wrote:

Are es gee wrote:

Where's your reference for that concern with EVA?

http://lmgtfy.com/?q=Wrong

This is a confusing answer. Are you saying you're wrong? Old PU disintegrates on the shelf but even that takes several years. I don't think there's any clear proof of that for EVA on the order of at least many many years. Just the sort of sites that also tell you you have to replace your shoes at 300 miles or you'll break you navicular. You're not one of those guys, are you?

Functionally the shelf life difference between EVA and TPU is likely non existent if you do any sort of consistent running you'll compress the crap out of the EVA before it shelf ages.

The Floatride Run Fast are listed as having a 6mm drop on the Reebok website. Running Warehouse lists a 10mm drop.

That is odd. I tend to side with RW, lol, but I will send them a message.

Lol, not a firm 300 mile guy, no, but I do feel like that is roughly when a lot of EVA shoes start to compress... My more limited experience w TPU is that it is much more resistant to compression than EVA.

As far as a shelf life, most of what I have read cites about a 6 month shelf life for most EVA, give or take.

I found a vblog from a guy who attended an event in Tokyo who handled the various Nike insoles. TLDR: ZoomX above the seam and REACT below the seam, both bowl shaped for stability. Exactly what shoeguyz said it was. But, look closely at the video... there is very little ZoomX in this shoe, it mostly forms a rim around the strobel board. $180 and very little PEBAX. I think I'm going to try the Reebok Run Fast, as it is cheaper and has more PEBAX.

https://www.youtube.com/watch?v=r2UTAXZVNTg&feature=youtu.be

theJeff wrote:

Lol, not a firm 300 mile guy, no, but I do feel like that is roughly when a lot of EVA shoes start to compress... My more limited experience w TPU is that it is much more resistant to compression than EVA.

As far as a shelf life, most of what I have read cites about a 6 month shelf life for most EVA, give or take.

6 month shelf life for EVA? No way. That sounds like marketing BS. I would be interested to see where you found this info. I have used running shoes that went years of being unworn and they felt. Only after putting some miles on them did they feel off.

vivalarepublica wrote:

theJeff wrote:

Lol, not a firm 300 mile guy, no, but I do feel like that is roughly when a lot of EVA shoes start to compress... My more limited experience w TPU is that it is much more resistant to compression than EVA.

As far as a shelf life, most of what I have read cites about a 6 month shelf life for most EVA, give or take.

6 month shelf life for EVA? No way. That sounds like marketing BS. I would be interested to see where you found this info. I have used running shoes that went years of being unworn and they felt. Only after putting some miles on them did they feel off.

Yeah...shoes don't go bad after 6 months of sitting. TPU is better than EVA under all that compression, but you won't find a reliable link that says EVA is flat in 6 months on a shelf. (Shoe store websites aren't a reliable link)

The only articles I can find about shoe shelf-life refer to the adhesives that bond different parts together, not the EVA itself. I believe I misread earlier. The issue with EVA is compression, not decomposition (even though I have definitely had EVA midsoles get “crumbly” well after they were relegated to yard work).

I retract my earlier claim, with apologies.

theJeff wrote:

The only articles I can find about shoe shelf-life refer to the adhesives that bond different parts together, not the EVA itself. I believe I misread earlier. The issue with EVA is compression, not decomposition (even though I have definitely had EVA midsoles get “crumbly” well after they were relegated to yard work).

I retract my earlier claim, with apologies.

Fake news!

theJeff wrote:

Lol, not a firm 300 mile guy, no, but I do feel like that is roughly when a lot of EVA shoes start to compress... My more limited experience w TPU is that it is much more resistant to compression than EVA.

As far as a shelf life, most of what I have read cites about a 6 month shelf life for most EVA, give or take.

One of my main current shoes is from 2012, and the EVA is fine. I once won a race in 15 year old shoes, where the EVA was not noticeable age degraded, though the outsole rubber was cracked. Mileage is 100x more important than how long it's been sitting. EVA flattening is greatest when it's first used, and each subsequent use flattens it a tiny amount, but less than the ones before. I'd guess that a 5 year old shoe that had never been used will be in better shape/fresher than the same exact shoe with one 10 miler on it. Last year I got a fresh new pair of the original Cliftons, and it was awesome despite having sit on the shelf for a couple years.

zzzz wrote:

I'd guess that a 5 year old shoe that had never been used will be in better shape/fresher than the same exact shoe just manufactured with one 10 miler on it.

So I have been interested in Boost-ish/TPU trail running shoes to use for hiking and/or lightweight backpacking. Offerings are few and I have heard that a firmer underfoot than Boost-ish midsoles is ideal for backpacking. But I am still interested because I love the feel of walking around in my Boost/Everun shoes.

I have not done the most thorough research, but it seems like these are the only options that are currently on the market:

1. Adidas Outdoor Terrex Agravic (old) and Terrex Agravic Boost XT (new)

2. Saucony Xodus ISO 3

In general, the Saucony Xodus ISO 3 seem a bit beefier and almost too heavy for running, which would be nice for longer hikes, and the Adidas Terrex Agravic seem more lightweight and ideal for faster trail running.

Has anybody else running across trail running/hiking shoes with Boost/TPU midsoles?

vivalarepublica wrote:

So I have been interested in Boost-ish/TPU trail running shoes to use for hiking and/or lightweight backpacking. Offerings are few and I have heard that a firmer underfoot than Boost-ish midsoles is ideal for backpacking. But I am still interested because I love the feel of walking around in my Boost/Everun shoes.

I have not done the most thorough research, but it seems like these are the only options that are currently on the market:

1. Adidas Outdoor Terrex Agravic (old) and Terrex Agravic Boost XT (new)

2. Saucony Xodus ISO 3

In general, the Saucony Xodus ISO 3 seem a bit beefier and almost too heavy for running, which would be nice for longer hikes, and the Adidas Terrex Agravic seem more lightweight and ideal for faster trail running.

Has anybody else running across trail running/hiking shoes with Boost/TPU midsoles?

Altra King MT 1.5 (and the 1.0, but apparently the 1.5 is a significant improvement over the 1.0)

Skechers has a Flight Gen trail shoe. Flight Gen is EVA, but has gotten a lot of love on the thread (for good reason), so figured I’d include it.

And yes, I still like TPU on trails. I am doing most of my trail running in a pair of Freedoms that lost its topsole (they have an Everrun midsole and glued-in Everrun topsole, + a standard EVA removeable insert). This makes them slightly firmer (and roomier and more stable) than typical Freedoms, and they’ve been great on all but the wettest stuff.

Ah yes, the Altra King MT, I forgot about those. I am not crazy about those for hiking because they are quite thin and are more designed for trail racing. I have used my Saucony Freedom on trails, as the tread has some grip for easier, well maintained trails.

Actually, I do not even care for TPU on trails because EVA provides enough cushion for me. I run in a pair of thin, lightweight Inov-8 shoes on trails and they are good for 1.5 hours or more. But if I spend half a day hiking, I imagine the TPU would feel nice, as my feet are the first things to feel the pain of a long hike.

Do you happen to know the model of the Skechers trail shoes with Flight Gen? All I can find that is currently available are the Skechers GOrun MaxTrail 5 Ultra (what a mouthful), which has something called Ultra Flight:

Ah, poop. 5Gen, not Flight Gen. Apologies.

Try removing the topsole from your Freedoms, if you don’t mind breaking some eggs. I have really enjoyed trails on these.

theJeff wrote:

https://www.runningwarehouse.com/Skechers_GOtrail_2/descpage-SKGTM22.html

Ah, poop. 5Gen, not Flight Gen. Apologies.

Try removing the topsole from your Freedoms, if you don’t mind breaking some eggs. I have really enjoyed trails on these.

For what it is worth, the roadtrailrun guys have good things to say about Ultra Flight. But it seems like the outsoles on this particular shoe leaves something to be desired:

Jeff, big news! New Altra midsole material!

https://www.runnersworld.com/gear/a22550700/new-running-shoes-tech-gear-summer-release/

It's called Quantic, and apparently just as good if not better than Ego but lighter! What are your thoughts buddy?

theJeff wrote:

Lol, not a firm 300 mile guy, no, but I do feel like that is roughly when a lot of EVA shoes start to compress... My more limited experience w TPU is that it is much more resistant to compression than EVA.

As far as a shelf life, most of what I have read cites about a 6 month shelf life for most EVA, give or take.

I've worn a lot of Hokas over the years and 350-400 is when the EVA starts to go - I tend to agree with you.

I wonder whether the Zantes are causing my injuries? I might have started my own shoe company.