adidas Ultra Boost Uncaged

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The ‘Uncaged’ concept on this latest Adidas release stems from consumers worldwide physically ‘hacking’ the original Ultra Boost silhouette, cutting off the external cage in order to create something brand new. Adidas have reacted to the trend with this latest iteration of the Ultra Boost, evolving it into it’s latest form to further blur the lines between fashion and performance.


With the removal of the cage on the original Ultra Boost, structural integrity was decreased as the plastic scaffold helped to pull the shoe together once laced up and fully lock down your foot. For the second coming, the Primeknit form was slightly altered around the internal portion of the sidewalls to reinforce the shape to add more support, further enhanced by the elasticated entry point around the cuff of the foot.

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Sitting alongside the newly strengthened Primeknit upper, the Boost midsole unit has remained largely intact with no real noticeable changes. Boost was first introduced into the adidas Running line back in 2013 with the Energy Boost range, designed purely to serve the performance market over the aesthetic conscious.

The construction of the midsole consists of 2500-3000 small plastic pellets per shoe, and each one is injected with air and compressed together with steam and pressure to create a larger block of flexible foam. This alternative to your run of the mill EVA midsole is proven to enhance performance (and has the awards to prove it) and vastly improves cushioning and energy return upon impact.

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Through the process of ‘open sourcing’, adidas took note of the drastic actions of it’s consumers, and in a way ‘collaborated’ with them in developing this new idea by listening directly to their feedback. The first two ‘OG’ colour ways of Uncaged sit at each end of the colour spectrum, with a monochrome grey knit sitting beside a vibrant neon red alternate.

The Primeknit application on the Uncaged is far more disruptive than the clean block colour way of the first black & blue Ultra Boost, designed to represent the feeling of running through the busy, hectic city environment. Visually it’s very similar to some of the recent NMD releases which have utilised the same technique.

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All three colourways of the Adidas Ultra Boost Uncaged will be available online and in selected size? stores on Wednesday 29th June, priced at £130 and available in sizes 6-12 (with selected half sizes).

Look out for links posted at 8am over on our Twitter and Facebook pages that will take you directly through to the products.



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