Lace up was secure and mid foot and heel hold seemed fine with somewhat thicker socks on both my wider left foot and narrower right for my first run.Īfter wearing them casually for a few days, during my second run with thinner slicker socks I struggled to get a good heel lock on my narrower right foot. I have had none of the usual pressure over the big toe issues of knit uppers of early Ultraboost or even UB21 with its extensive toe overlays here. Fit was true to size in length and width with mercifully enough stretch or not to much overdone width in the toe box. They were snug and a bit hard to pull on at first try on but this rapidly changed with use. Sam: Out of the box I was struck by the intricate 3D lattice midsole, flared heel, black and solar red highlighted upper and high rear knit pull on tab. The Tokyo Collection colorway will be available from July 1 st, before a worldwide drop from August 12 th. The sign-up for a chance to buy one of the limited shoes is from May 5 th to May 16 th. Stack Height: 21.2mm / 32.5mm, 10 mm dropĪvailable May-August.
#Adidas ultra boost 4d mens free
Very shock absorbing vibration free heel feel Sam.Distinct sensation of forward motion, as advertised Sam.No sensation of any of the usual foam density or bouncy hard to control Boost in the mix, especially at the heel.Innovative and effective new approach to midsole technology Sam.Really run ready and for what and whom? We tested to find out! 4D now today a new and compelling midsole technology for actual running or are we still at the concept car technology platform demo stage? For sure 2020 and now 2021 have ushered in an era of run shoe midsole innovation with primarily super light energetic foams and here we have a completely different approach. Jeff and I received samples prior to receiving any of the information above so we were able to test without any of the tech data and marketing and then continued testing after receiving it. PRIMEKNIT+ UPPER: Using historical mapping data, the PRIMEKNIT+ upper has been tailored to work perfectly in tune with the adidas 4DFWD midsole, supporting the runner every move forward with a sock-like fit, while letting the foot breathe freely MIDSOLE INNOVATION: A unique bowtie-shaped FWD CELL redirects energy from each step's impact to create horizontal forward motion LATTICE CONSTRUCT: Made of 39% bio-based 3D material, offering 23% more cushioning and generating over three times as much forward motion when compared to previous generations of 4D midsole under vertical loading in mechanical testing conditions The key features called out by adidas are:
To create this midsole, adidas and partner Carbon combine athlete data and Carbon’s Digital Light Synthesis TM technology to produce the precision tuned 3D printed midsoles with the ability to fine tune midsoles to specific patterns of movement. Selected from one of five million possible lattice structures and made of 39% bio-based material, the bowtie-shaped FWD CELL according to adidas has been specifically coded to compress forward upon vertical impact to redirect vertical load energy to horizontal energy in the stride while reducing peak breaking force by an average of 15% to deliver running economy comparable to Ultraboost. In the 4DFWD the FWD CELL lattice is said to be designed to deliver up to 3 times more forward motion in mechanical lab testing compared to previous generations of the technology. Adidas has been working away on 3D printed midsoles for several years now.
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