Herzogenaurach’s three stripes company just released the state-of-the-art renovation of their popular UltraBOOST series. There is possibly no shoe in the assortment that feature so much of adidas’ soft and springy Boost material then this one. In addition to the iconic three lines, the material has been a trademark for adidas running shoes since its very first release in 2013. I had the chance to test one of the first pairs, the Adizero Adios Boost, back then. Check the Post if you are interested.
With the UltraBOOST series adidas has been surfing amid the so called “lifestyle” and “performance” segment. There are no two opinions about the look, that is for sure. Nonetheless we will concentrate on the performance part of things in this post. As mentioned earlier on, the boost material is a trademarked polymer exclusively used by adidas. Basically, it is a lot of small balls which are compressed and molded to protect the foot from the ground and it delivers a certain boost while toeing off during the running movement. The small balls contain of patented thermoplastic urethane. Adidas cooperated with the German chemical powerhouse BASF (Hello Steffen 😉) to create this material. Adidas did not hold back with the usage of the boost material. Particularly at the back end of the shoe. At first the Boost material was only known within the running scene, but when a certain Kanye Omari West was seen wearing a pair of UltraBOOST “Triple White” in 2015, the shoes went mainstream and not only boosted running strides but also sales. The three stripes are an iconic characteristic that defines Adidas. At first the brand added the stripes to its running shoes to make them sturdier. One of the initial T&F athletes to use the shoes with the stripes was legendary Jesse Owens in the 1936 Summer Olympics. By now, the stripes on the clover symbol represent Adidas focus on variety. Finnish brand Karhu and Adidas used to share the three stripes but Adi Dassler bought the rights in 1952.Comfort undoubtedly is a key feature with this shoe. The upper feels super pleasant and comfortable. The pattern on the side of the shoe make sure that enough stability is provided. I like the sock-like design and the wide flexible fit around the forefoot. The Ultraboost 21 upper is made from flexible Primeknit material and is only 1.9mm thick. Compared to a traditional upper, this really feels like a sock. The last 7 years, the Boost material was a stable when it comes to cushioning. Several models have proofed this. Notwithstanding the age, the material is still good and certainly does the trick when it comes to the padding part. The energy return was lacking in previous models and adidas successfully changed this with this model and the newly developed LEP Torsion System. The Torsion system is something that can been seen in older models but adidas changed it quite a bit and added the flexible TPU fork to increase the toe off. A new standard is the Continental rubber that is used on the outsole of the shoe. Its durable and grips pretty well. Two german tradional companies unite. Continental was founded in 1871 as a rubber producer and still is strong in this segment producing all kinds of tires and car equipment. It is no top-secret that the Ultraboost 21 is not the lightest shoe. With a weight of nearly 380 grams in my US13 model it is weighty for its standard. Nevertheless, it doesn’t feel super heavy or unsmooth while running. The feeling was normal and I never felt I have to invest more energy then I essentially got out of the shoe. According to adidas, the Boost foam in this shoe is now firmer. This should result 20% more responsiveness. A close up shot highlighting the Primeknit upper that is made of yarn from recycled plastic bottles. It looks like the heel is one gigantic portion of Boost foam with one major drop. With 10mm, it is not that huge at the end. The heel foam is wrinkled around the cup of the heel and produces a setup that allows the foot to sit securely inside the midsole. This is a major change to the previous version, the Ultraboost ST. To me the Ultraboost 21 is a daily milage grinder. I really treasure the fit and the padding it offers. I use this shoe on a daily basis to get the base miles in the tank. I like the fit the reliability of the boost material that certainly doesn’t disappoint. With the arrival of the Lightstrike and Lightstrike Pro material it will be exitng to see what the future holds for this modell range. Boost is the heaviest of the current three Adidas performance foams and it will be interesting to see how the brand develops or include these materials further.
Something that these days is part of the shoe business, is the rumor mill. Since months Alameda, California grounded outdoor powerhouse The North Face, was set to drop a carbon plated shoe. Well, it seems that all major shoe corporations are on the outlook to apprise their respective top range models with this technology. But suddenly it was a brand that is not necessarily known for its shoe building skills, that joined the hype. Since 1968 The North Face distribute and produce outdoor equipment. It all started with climbing gear and then grew into a brought variety of accessories, clothing and footwear. Personally, I have tested more than a few of their off-road running shoes in the past. Although their jackets, vests, caps and technical gear have been a stable in my wardrobe over the last decade, none of the shoes have majorly impressed me and it seems that technical clothing was more the focus then suitable footwear. Now they released a performance oriented trail running shoe that goes by the name of Flight Vectiv, merging a 3 D carbon fiber footplate, midsole rocker geometry and SurfaceCTRL grip into the first trail specific shoe using the prominet carbon technique. I had a chance to spot the Flight Vectiv last April as Spaniard and The North Face athlete Pau Capell wore the shoe throughout the 2020 version of the Fjällmaraton around Åre, Sweden where he came 2nd in the 100 kilometer distance. Pau was part of the development process of the Vectiv equipment range and mostly this shoe. TNFs VP of Global Footwear, Jean Marc Djian aimed high when the company took on this project. The company recognized that another try into the footwear market had to be an innovative and exciting. The Flight Vectiv is the top model of the novel TNF shoe assortment. It is the one shoe that contains full-length carbon plate combined with a rocker geometry. This combination is intended to upsurge the energy return and I was more than keen to see how this mix turned out in a shoe that is intended to be used off the road, a setting where the carbon technology is more to be seen in up-to-date shoe releases. On the picture above some details of the carbon plate are teased on the external. Even though the sock-like silhouette of the shoe looked like a pleasing feature, I was quite staggered how rigid it was to get into the shoe. The opening is rather small and that undoubtedly created some matters to me. As soon as you’ve entered the shoe, there is not a tense sensitivity. It just appears that the entering part of the shoe is pretty close-fitting. After a while I got used to it and know how to enter as the reinforced, breathable-knit upper is pretty strechable. Running this shoe throughout wintertime, I have the feeling that the body-hugging fitting also stops all sorts of muck to enter the inside. To me something that is very helpful particularly with the heavy use of salt and sand on the local streets. Frequently the small particles find a way to enter a shoe. Not so in this one. Generally the one piece upper that is elasticated and hugs your upper foot and ankle is super nice and fits around the foot like a glove. With the Flight Vectiv, The North Face planned a shoe for the longer and ultra-distances. The company paid attention to durable ingredients such as kevlar, polyamide and matryx materials that they also tested and used in other equipment. This time it seems that The North Face was able to familiarize their extensive knowledge from mountain equipment into footgear. The Flight Vectiv is an overall quality shoe that is very well made. Till now I spend somewhat over 100 kilometers in this shoe and I’m constantly surprised how it tackles different grounds and weather situations. The picture shows the 3D-molded heel counter for a better fit, another nice detail in a well build shoe with a quality finish. There were times when The North Face allowed their sponsored athletes to use different shoes and switch from their very own models to the ones that the competition offered. This has clearly changed now with the new shoe range. Several athletes have been smashing FKT’s last year. One of my favorite runs has been the record setting Grand Canyon R2R2R-alt FKT effort by TNF legends Mike Foote and Rob Krar. Check their video here. Time for these two to tackle some SwimRun competitions i guess. Without a doubt, the climax of this shoe must be the so-called 3D Vectiv plate. It offers momentum and in combination with the stability Rocker shape, the foot placement is optimized. The shoe is not super soft as many other carbon running shoes, but this is something that aims the runner while running on technical ground. At the start it feels like the shoe is rigid as it does not provide much flexibly, especially to the sites. Although it feels stable and the feel for the ground is certainly given. Officially The North Face labels the Vectiv technology as “revolutionary soling architecture.” Fundamentally what they are describing are the layers beneath the feet. These are all the different foams and treads that work together to deliver a cushioned, safe and springy sensation. Despite the fact there is a lot of advanced and new material that has been incorporated in this shoe, the outsole is known from previous models. Grip on wet and dry terrain has been the attention in the development procedure. If you expect a super aggressive and “deep” outsole, you will be dissatisfied. The lugs are well and smartly placed but come in with 3.5 mm which is not a standard in trail shoes. After some sketchy situations, the design and traction really grew on me. To me it is a great mix of traction and control. The lugs are places in proper distance and that means that snow, dirt, or whatever sticky stuff you encounter, will not get stuck. I try to break in shoes on the treadmill. Until now, this tradition has never been used with trail shoes. It was different with the Flight Vectiv. It certainly is a versatile sole. A detailed look at the outsole construction that protects the 6 mm toe-to-heel offset. This shoe facilitated 14 North Face sponsored athletes to set FKTs wearing different Vectiv prototypes during a nearly race free 2020. To me, the Flight Vectiv delivers a high level of comfort and proper cushioning that still allows to feel the ground but not the pounding. Combined with the securely sensation of the sock-fit paired with a minor, cushioned padding at the upper heel region, this shoe ensures thoroughgoing comfort and support. Throughout the punitive dark and slushy time of the year and now, when all the lovely white stuff is about to dissolve, this shoe has really gotten to me. It’s fun to run due to the pleasant and well thought cushion, the ground feeling is excellent and joint with a well-planned outsole, it generates a certain security during the cold season. I ran the shoe a lot on icy and wintry streets but also took it around the local, technical, trail system. I get to treasure a well thought out shoe that I never saw coming from The North Face. Having run plenty of carbon-based road running shoes, I really valued this innovative tactic and the way it was shifted into a running shoe aimed to hit he paths. It can be discussed if it makes sense to issue a trail shoe that has a white upper, but at the end I felt it was enjoyable that the daily run was able to produce the color line. A very philosophical slant to this debate, I know. Its some sort of a minimalistic approach, even from the design. Typically trail shoes do look a bit unlike. The Flight Vectiv seems more like a road shoe. Yet, I have the feeling the shoe will continue in my daily rotation for a bit longer.
While Hoka One One seems to have certain trademark models such as the iconic Clifton and the Bondi, the Cavu seems to fly a bit under the radar. Usually Hoka is known for massive cushion, with the Cavu they come up a thinner approach to the sole design. Cavu product descriptions vary quite a bit. The shoe sometimes is described as a performance oriented sneaker. Personally i have never felt that way. The Cavu is a clean and simple running shoe that, to me, offers a lot I’m looking for in a reliable, performance oriented running shoe. A feature that certainly sticks out and makes this shoe special, is the nicely knitted, tongue-less and extremely comfortable stretch knit upper. The sock-like fit is amazing and creates a nice snug feel to the feet. Enough to just easily slide in and enjoy the ride without being too loose. A more detailed look at the well placed zonal perforations with some structured sections that provide good breathability. Nevertheless does the structure of the shoe paired with the knit material offer a proper stability while running. A close look at the heart of the Cavu – the Profly midsole. A midsole design that is pretty unique in the Hoka range. The sole offers a very responsive toe-off and very nice direct feeling that i treasure a lot on longer tempo runs.One more detailed look at the updated EVA midsole that provides significantly more comfort to the underfoot than the one that was provided in the 2nd generation model of the Cavu. No worries readers. This shoe is a 100% Vegan and weights in with 198g and an extra springy rocker profile while a deeper Active Foot Frame delivers added support. Nice one!A front view of this light and speedy powerhouse. Simple does it with the Cavu and that is what i realize appreciate with this one, a fast and efficient transition! This is the heel section of the shoe. From here to the toe section, there is a 6.00mm drop. Enough to create some nice dynamic within the stride. The Profly sole that is used in the latest Cavu 3 keeps on offering a nice and soft landing while having a nice and springy toe-off. The redesigned midsole and outsole provide a smoother, more comfortable running experience than the previous model. On the outsole and rubberized EVA material offers some more cushioning and now, after about 150 kilometers with this shoe, is still in a pretty good shape. This shoe is resilient. The 3rd update of the Cavu is a proper one and a significant step in the development of this shoe. This shoe comes in the lower price dement but i have to say it offers was more than the price suggested. To me, this is not a sneaker, it is a running shoe that provided me a great range of services. From dual commutes to tempo runs and a few track session, the Cavu was a reliable and fun partner.
Hoka One One is not all about chunky, oversized shoes. A heck of a 1mm thick full length carbon plate and a, for Hoka Standards thin sole, make this one a proper racing shoes.Front view – the slick neon colourway (officially called: Citrus / Cyan) gives it away, this lightweight performer is loud and quick. The Evo Carbon Rocket weighs in with a mere of 218 grams. If you put the amount of cushion in account, this is a pretty rad competition weight just right there. I quickly became a fan of the smooth and thin upper. Pretty good breathability and a snug fit. All of this with a pretty roomy toe box. Nothing to complain really. A closer look at the upper and the tongue. Both parts of the shoe are pretty slim and feel very good. Minimal and durable as it should be with a shoe that needs to go fast. Another detail shot – The clean back end with a height of 26mm that goes down to 25 mm at the forefoot. Inside the ride – Please note the very comfortable and efficient 1.00mm hell to toe drop. I enjoyed this a lot going through the paces. It certainly helps to be a mid-foot or fore-foot striker. What you see, the front of the shoe. What you can not see, a striking carbon fiber sole sandwich. Pretty Yummy… A early prototype of this shoe was spotted while Cam Levins broke the Canadian marathon record in Toronto at the end of last year. Afterwards message boards went crazy and soon after his race Hoka One One released the Evo Carbon Rocket to the masses. It is pretty obvious that the sole has the design of a rocking-chair. This creates a very springy toe-off while running. Hoka continues to push the competitive running segment. Their models continue to surprise me in a positive way. Bottomline – the outsole below the ProFly cushion material consists of yellow durable rubberized foam.The obvious question is: Is the Evo Carbon Rocket comparable to the latest Nike 4% hype? In my opinion it not really is. The Evo Carbon Rocket is much stiffer and firmer which creates a completely different feeling. It sure has a great bounce but that does not match the sensation of the foam that is used within the latest 4% fleet. It will be interesting to see how the latest Hoka One One Carbon X compares.
This site uses cookies. By continuing to browse the site, you are agreeing to our use of cookies. Find out more.
The Runssel Website (www.runssel.com) places cookies, which are small data files, on your computer or handheld device. This is standard practice for all websites.
Cookies are essential for helping me deliver a high quality website and to collect information about browsing behaviour.
By using and browsing the Runssel website, you consent to cookies being used in accordance with my policy. If you do not consent, you must disable cookies or refrain from using the site.
