"Yet after poking, prodding, stomping upon, dissecting and inspecting (under a microscope) the new “boost” midsole, Martyn confirmed what Adidas is claiming: the shoe has “industry leading” energy return (more on this soon), thin and lightweight but effective cushioning, tremendous resistance to heat and cold, and more durability (perhaps twice as much) as conventional EVA midsoles. "
I am now on my second pair of Energy Boost and have found the claims above to be largely true. With the exception of some curling up at the toe and normal outsole wear my first pair with 300 miles feels and looks like new. The Boost material really holds up far better than conventional EVA. My review of the Energy Boost is here.
This said the Energy Boost is really a trainer. In October adidas launched the adizero adios Boost a Boost midsole version of their popular adios racer.
adios Boost is a light, 7.8 oz Men's 9 US, 6.6 oz Women's 8 US cushioned racer/trainer with heel/toe drop of 23/13mm vs. 26/17 for the Energy Boost according to Running Warehouse. This is not a low drop shoe but certainly runs like one for me. They fit me true to my size 8.5 with a light sock.
The adios Boost is just starting to be available in the US. I got mine from Wiggle in the UK earlier in September. Wiggle is a great place to get products released in Europe before the US for very close to what they will sell for in the US and with very reasonable and rapid shipping.
|adios Boost (left) Energy Boost(right)|
The individual cells' weave is not particularly soft but as they are small and with entirely welded overlays in the toe box provide a great combination of support and give.
The lacing goes far further towards the toe than in the Energy Boost.
The toe box is plenty wide for a racing shoe over the forefoot then somewhat pointy towards the toes. The tongue is thin mesh with minimal padding.
Midsole and Outsole:
The midsole is of course made of Boost. The construction is identical to the Energy except of course thinner at stack heights of 27.75/17.25mm vs, the Energy Boost with 31.5/21.5mm.
|adios Boost Outsole|
|adios Boost Outsole|
Ride and Runs:
I have done 5 runs for a total of about 30 miles in the adios including a very brisk 7.5 mile tempo that included flats and steep uphills and downhills. In a word "incredible" at speed, less fun for a jog. The adios have a great combination of snappy response and a cushioning that only be described as soft when it needs to be and firm when it needs to be. By this I mean the initial landing is soft but stable and the push off is firm, very directed with no sloppy feeling with great ground feel and responsive rebound from the combination of Boost and Torsion. My tempo at altitude was considerably faster than expected and the next day my legs were none the worse for wear. With a marathon in 2 weeks with 2500 feet of downhill I will be cautious and run the Energy Boost but for any other race adios Boost for me!
Update: Ran my first race in the adios boost, the traditional, low key Gosport Chowder Club Huffin' for the Stuffin' 5K here in coastal NH and finished 3d overall. They felt great super snappy and firm but unlike other racing flats not harsh and jarring. Legs fresh the after the race and next day.
Update 2/2014: I have now done 3 long races in the adios Boost: 15K, Half, followed by a 20 miler the week after All three races have been surprisingly fast for me including a 1:37.42 half in cold weather, my first half under 1:40 on a legit course since 2011. Even the 20 miler yesterday was painless and I ran today with minimal soreness. The adios truly disappear on the feet, are snappy, and without removing road feel have a unique combination of race flat fast feel, great cushion and no harshness.
Update 6/16/14: 3 races in the adios in the last few weeks. A 25K trail race on wet grass, some mud and dirt/gravel roads. Great upper support and pretty decent traction. Followed that with a 5K and 10K on the road. There is something about these shoes that keeps your stride in a groove. You can feel when tired things slipping and a slight adjustment keeps one tracking straight and smooth.
Light, cushioned, highly responsive racing machine for distances from 5K to Marathon.
Boost material really works at speed when combined with the stability of Torsion
Expected long life of midsole for consistent performance over time.
10 mm drop may put off some but I run in mostly 4-6mm shoes and didn't notice.
Toe box may feel narrow for some but after all this is a race shoe.
Stiff forefoot with highly directed push off, not particularly "natural" for some.
Price: Expected MSRP around $140.
Other reviews: Pete Larson at Runblogger reviews the adios boost and likes them a lot.
adios boost review at Believe in the Run. adios boost directly out of the box for a marathon!