Adidas Energy Boost 2 Review
The Adidas Energy Boost 2 has a new material in the midsole (see 'Adidas Boost Foam' below) which changes how this shoe feels. The Energy Boost is immediately comfortable and the foam makes a noticeable difference to the ride. Sadly the Boost is a traditional design, with the typical raised heel and I would not normally recommend considering it. However, because the boost foam works so well, and because removing the insole reduces the drop to 7mm, I think it's worth considering. The insole is about 3mm in the forefoot and 5mm at the heel. Without that extra, the shoe is 14mm/21mm. Note that the Boost and the Boost 2 are virtually identical. I could not find any differences other than the "2" on the label. I've rated the Adios as "worth considering." (I use The Science of Running Shoes as the basis of how I test running shoes and what you should look for in a running shoe.)
- . The new foam makes the Boost more comfortable and long lasting.
- Running Economy. . The Boost is well cushioned, and the cushioning has far more spring than conventional EVA foam. There is some evidence that this improves
- . With that the insole removed, the Boost has 7 mm of drop, which is more than I'd like.
- . This shoe uses single density of foam, with no grooves to improve flexibility.
- . The Boost is less flexible that I would have expected, partly because the foam does not have any grooves, and partly because of the extensive outsole.
- . There is a hard rubber covering most of the contact area of the shoe, which improves longevity.
- cutting open the toe box for comfort is a good idea. (I recommend cutting open the toe box of virtually all running shoes, with the exception of a few shoes like some Altra shoes. When you have some worn out shoes, you should try cutting open the toe box. I've found that it's a big improvement, allowing my toes to move naturally and engage for toe off, as well as reducing the possibility of blisters.) . The shoe is does not match the shape of the human foot, so
- . The upper is inflexible and fairly thick, with poor breathability compared with most shoes. There is a plastic 'skeleton' over the shoe from the ball of the foot back which adds weight and reduces comfort without seeming to add much value. However, it never caused me any discomfort.
- . The Boost has a tongue that is partially attached to either side of the upper. I found that this worked well, as it felt like a conventional tongue that stayed in place perfectly. The tongue has thick, soft padding.
- . The flat laces work well and remained tied.
- . The heel counter is part of the overall plastic skeleton.
The Energy Boost is immediately comfortable, with a light, flexible upper with no noticeable seams. I'm thankfully Adidas has used a traditional tongue and laces, rather than a sock style upper or Velcro fastening. And while the sole has the traditional raised heel, there is none of the multi-density foam or other intrusions that are so common. I think a lot of people will buy the boost because of its immediate comfort, but stay with it for its extraordinary characteristics.
This review was made possible by readers like you buying products via my links. I buy all the
2 Cushioning and Shoes
It's intuitively obvious that the cushioning in a shoe will reduce the impact on your body when running. However, The Science of Running Shoes indicates that the reality is rather more complex. While slight cushioning may reduce the effort needed to run by improving your Running Economy, most scientific research indicates that more cushioning does further improve Running Economy. In addition, cushioning does not generally reduce impact and may actually increase it. This is counterintuitive, but is likely to be due to the way a runners mind and body adapts to softer cushioning. Unfortunately, the scientific evidence is far from complete and it's hard to give clear recommendations. I believe that some runners will prefer more cushioning, while others prefer less, and typically those running further have a fondness for greater cushioning. I also believe that a shoe should be as light as possible, and a shoe should justify its weight with the cushioning it provides. My advice is to decide what level of cushioning you're looking for, and then find the lightest shoes that also fit well and are comfortable.
3 Visualizing the Attributes of the Adidas Energy Boost
4 Adidas Boost Foam
The Adidas boost uses a new type of foam in the sole that has more bounce and is more resilient. Adidas demonstrates this extra bounce by dropping a steel ball on their new foam and EVA, the industry standard foam. Because of the extra energy return in their new foam the ball will bounce much higher than on EVA. However, when we run our feet do not bounce off the ground, but have a short period of sustained contact, often called the 'stance phase'. So when your foot lands, it seems that the boost foam would return the landing shock back up your leg rather than absorbing it, which is less than ideal. It would be good to see a study that looks at how the boost foam changes the stresses on knees and hips compared with a standard running shoe. Regardless of how the bounce impacts your running, the increased lifespan of the new foam is appealing. Having a shoe that lasts longer is obviously good, but Adidas also claim that the new foam is more consistent through most of its lifespan, rather than gradually decaying in the way EVA does. Adidas also claims that their new foam does not change characteristics in extreme temperatures like EVA does.
5 A Comparison with other Recommended Shoes
For a more detailed comparison of these shoes see the Recommendations for Best Running Shoes. This table lists the key attributes of What to Look for in Running Shoes. For more detailed information, on the shoes see detailed shoe comparison.
|Asics 33-DFA Review||Asics||33-DFA||Worth considering||$90||5.7||10.6||16.5||27||27||0||6.1||6|
|Saucony Type A6 Review||Saucony||A6||Highly Recommended||$100||8.2||6.1||9.5||17||21||4||5.0||8|
|Adidas Adios Boost 2 Review||Adidas||Adios||Worth considering||$140||4.7||8.6||13.4||17||27||11||4.0||7|
|Hoka Bondi 5 Review||Hoka||Bondi||Recommended||$150||6.1||11.6||18.1||38||42||5||7.1||4|
|Hoka Clayton Review||Hoka||Clayton||Best of the Best||$150||8.8||8.3||12.9||26||30||3||7.3||5|
|Hoka Clayton 2 Review||Hoka||Clayton 2||Review Pending||$150||9.1||8.3||12.9||23||28||1||7.5||6|
|Hoka Clifton 3 Review||Hoka||Clifton3||Best of the Best||$130||9.1||9.8||15.3||34||38||3||8.9||6|
|On Cloudracer Review||On Cloud||Cloudracer||Worth considering||$130||5.7||8.2||12.8||19||27||5||4.7||8|
|Hoka Conquest Review||Hoka||Conquest||Worth considering||$170||5.0||11.9||18.5||28||34||5||6.0||3|
|Saucony Cortana 4 Review||Saucony||Cortana||Worth considering||$150||4.4||9.9||18.7||22||28||5||4.3||5|
|Mizuno Wave Cruise Review||Mizuno||Cruise||Worth considering||$120||6.6||5.9||12.5||17||20||7||3.9||7|
|Newton Distance IV Review||Newton||Distance||Worth considering||$155||7.5||9.1||14.2||26||31||3||6.8||6|
|Asics Gel DS Racer 10 Review||Asics||DS Racer||Worth considering||$110||8.2||7.0||10.9||21||26||6||5.8||6|
|Mizuno Wave Ekiden 8 Review||Mizuno||Ekiden||Worth considering||$115||5.7||5.7||14.6||13||18||6||3.2||8|
|Saucony Endorphin 2 Review||Saucony||Endorphin 2||Worth considering||$115||8.0||5.1||9.6||15||13||-1||4.1||8|
|Adidas Energy Boost Review||Adidas||Energy||Worth considering||$160||7.2||10.0||15.6||20||30||7||7.2||6|
|Altra Escalante Review||Altra||Escalante||Best of the Best||$130||9.1||8.7||13.5||28||25||-1||7.9||7|
|Puma Faas 100 R Review||Puma||Faas 100||Highly Recommended||$90||8.4||6.1||9.4||15||20||1||5.1||9|
|Saucony Fastwitch Review||Saucony||Fastwitch||Highly Recommended||$90||9.5||7.1||11.1||20||22||4||6.8||8|
|Topo Fli-Lyte Review||Topo||Fli-Lyte||Highly Recommended||$100||6.0||9.4||14.6||23||24||4||5.6||6|
|Nike Free 4.0 Review||Nike||Free||Recommended||$120||5.3||8.2||13.6||24||30||6||4.4||6|
|Saucony Freedom Review||Saucony||Freedom||Recommended||$160||5.4||10.7||16.6||25||29||3||5.8||7|
|Asics Gel Lyte 33 3 Review||Asics||Gel Lyte||Not recommended||$90||8.0||7.3||11.4||17||24||4||5.8||9|
|Skechers GOmeb Speed 3 Review||Skechers||GOmeb 3||Worth considering||$120||6.9||8.1||12.6||20||24||4||5.5||8|
|Skechers GORun 4 Review||Skechers||GORun||Not recommended||$100||6.1||7.5||11.7||15||23||3||4.5||7|
|Skechers GOrun Ultra 2 Review||Skechers||GRU||Worth considering||$90||7.5||10.0||15.6||28||34||8||7.5||5|
|Skechers GOrun Ultra Road Review||Skechers||GRU-R||Worth considering||$105||6.5||11.3||17.6||30||40||6||7.4||7|
|Asics GT 2000 Review||Asics||GT 2000||Not recommended||$120||4.8||11.2||17.4||28||35||5||5.4||4|
|New Balance Hanzo S||New Balance||Hanzo||Worth considering||$110||7.6||6.9||10.7||21||19||2||5.2||6|
|Hoka Hupana Review||Hoka||Hupana||Recommended||$115||6.1||8.9||13.9||31||36||7||5.4||5|
|Asics Gel Hyper Speed 7 Review||Asics||Hyper Speed||Highly Recommended||$75||10.9||6.3||9.8||22||26||5||6.8||7|
|Altra Instinct 3.5 3.5 Review||Altra||Instinct 3.5||Recommended||$115||4.9||9.3||15.2||24||23||0||4.5||6|
|Altra Instinct 4.0 Review||Altra||Instinct 4.0||Worth considering||$120||6.0||9.8||15.3||29||25||-1||5.9||6|
|Asics Tarther Kainos 3 Review||Asics||Kainos||Worth considering||$130||10.0||6.9||10.7||17||27||9||6.8||7|
|Saucony Kinvara 8 Review||Saucony||Kinvara 8||Best of the Best||$110||9.3||8.6||13.4||26||31||3||8.0||6|
|Nike LunaRacer 4 Review||Nike||LunaRacer||Recommended||$90||9.9||7.0||10.9||22||30||7||6.9||6|
|Nike LunarSpider R5 Review||Nike||LunarSpider||Recommended||$125||6.9||6.7||10.4||17||21||3||4.6||7|
|Hoka Mafate Speed Review||Hoka||Mafate||Best of the Best||$170||7.6||11.9||18.5||39||40||4||9.0||3|
|Pearl Izumi EM Road N0 v2 Review||Pearl||N0||Highly Recommended||$100||7.9||6.5||10.1||14||20||4||5.2||8|
|Saucony Nomad Review||Saucony||Nomad||Worth considering||$110||4.3||10.5||17.2||25||27||2||4.5||5|
|Hoka Odyssey Review||Hoka||Odyssey||Highly Recommended||$130||8.5||9.4||14.6||37||45||5||8.0||4|
|Altra Olympus Review||Altra||Olympus||Highly Recommended||$130||5.4||11.8||18.4||27||27||3||6.4||4|
|Altra One 2.5 Review||Altra||One||Highly Recommended||$100||8.5||7.1||11.1||22||25||2||6.0||8|
|Altra One 3.0 Review||Altra||One||Review Pending||$100||6.1||8.8||13.7||23||23||0||5.4||7|
|Altra Paradigm Review||Altra||Paradigm||Highly Recommended||$130||6.4||9.9||15.4||25||25||1||6.4||4|
|Asics Piranha SP 5 Review||Asics||Piranha||Recommended||$100||10.1||4.2||6.5||11||15||3||4.2||9|
|Brooks PureFlow 5 Review||Brooks||PureFlow||Worth considering||$110||6.0||9.7||15.1||26||29||5||5.8||8|
|Salming Race Review||Salming||Race||Worth considering||$130||6.9||6.5||10.1||16||19||4||4.5||7|
|New Balance RC1600 v2 Review||New Balance||RC1600||Highly Recommended||$110||8.8||5.6||8.7||15||21||5||4.9||8|
|New Balance RC5000 Review||New Balance||RC5000||Best of the Best||$125||12.2||3.4||5.3||13||17||3||4.2||8|
|New Balance RC5000v2 Review||New Balance||RC5000v2||Best of the Best||$125||14.2||4.0||6.2||13||21||6||5.7||8|
|Skechers GoRun Ride 3 Review||Skechers||Ride||Worth considering||$85||5.9||8.5||13.2||18||28||6||5.0||9|
|Inov-8 RoadXTreme 220 Review||Inov-8||RXT-220||Worth considering||$120||5.2||8.0||18.2||14||17||3||4.2||9|
|Topo ST-2 Review||Topo||ST-2||Highly Recommended||$90||8.2||7.3||11.4||20||18||0||6.0||8|
|Hoka Stinson Lite Review||Hoka||Stinson||Highly Recommended||$160||7.3||11.6||18.1||35||40||6||8.5||2|
|Nike Zoom Streak LT 3 Review||Nike||Streak LT||Best of the Best||$80||8.8||5.4||8.4||16||21||4||4.8||6|
|Adidas Takumi Sen 3 Review||Adidas||Takumi Sen 3||Highly Recommended||$160||7.7||6.6||10.2||17||21||4||5.1||6|
|Altra Torin 2.0 Review||Altra||Torin||Worth considering||$125||5.8||9.6||14.9||28||25||-1||5.5||5|
|Hoka Tracer Review||Hoka||Tracer||Recommended||$130||7.2||7.4||11.5||21||24||2||5.3||6|
|Merrell Trail Glove 3 Review||Merrell||Trail Glove||Best of the Best||$100||2.9||6.9||24.7||11||11||0||2.0||9|
|Topo Tribute Review||Topo||Tribute||Recommended||$100||5.9||7.3||11.4||20||18||-1||4.3||7|
|Mizuno Wave Universe 5 Review||Mizuno||Universe||Highly Recommended||$125||10.7||3.1||10.6||9||12||1||3.3||9|
|Merrell Vapor Glove 2 Review||Merrell||Vapor Glove||Highly Recommended||$85||2.1||6.1||27.6||6||5||0||1.3||10|
|New Balance Vazee Pace Review||New Balance||Vazee Pace||Worth considering||$110||6.0||8.6||13.4||18||24||6||5.2||6|
|Asics TartherZeal 3 Review||Asics||Zeal||Worth considering||$140||10.9||6.3||9.8||17||27||9||6.8||7|
It's not a running shoe, but I love the Hoka Tor Ultra hiking boot and I've tested the Altra Lone Peak Boot.
Older shoe reviews: Saucony Hattori Review, Mizuno Cursoris Review, Skechers GO Bionic 2 Review, Hoka Clifton Review, Saucony Virrata 2 Review, Brooks PureCadence 3 Review, Brooks PureConnect 3 Review, Brooks PureFlow 3 Review, Skechers GO Bionic 2 Review, New Balance 980 Review, Brooks Transcend 2 Review.
Reviews of shoes that are not worth including on the table: Hoka Huaka Review, Patagonia EVERlong Review.