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Adidas X18+ Adizero Boots: Street-Ready Speed and Comfort

The renewal of adidas’ fastest silo brings a trainer version that adapts the characteristics and fit of the X football boots to a standard street trainer.

By The Boot Room Editorial Team · Jul 17, 2026 · 2 min read
New adidas X18+ Adizero boots

The renewal of adidas’ fastest silo brings a trainer version that adapts the characteristics and fit of the X football boots to a standard street trainer.

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Design Philosophy: Football Silhouette, Street Fit

Although the X18+ Adizero is an adaptation of a football boot, adidas designed it with a street trainer in mind. The last is wider than that of a football boot, and the fit is intentionally less close-fitted than what is required on the pitch.

Upper Construction and Features

The upper is crafted from a synthetic microfiber nearly identical to the material used on the new adidas X 18.1. The fabric closely resembles the Speedmesh found on that model, and the same drilling distribution is used to promote ventilation and keep the shoe lightweight. The laces inherit the position and layout of the X 18.1 but with the thicker, wider fit typical of a trainer.

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Heel Modifications for Comfort

The heel has been refined: the back of the heel counter is slightly shortened, and the padding in that area has been increased to improve comfort.

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Sole Unit: Boost Technology Defines the Difference

The biggest difference between the football boot and the trainer lies in the sole. adidas chose Boost—the most comfortable material in its catalog, also used in the brand’s running models. Boost provides excellent comfort and a spectacular energy return with every step, giving a bouncing sensation that reduces impact. Under the Boost layer, a hardened synthetic lining ensures durability along with a comfortable and effective fit.

Verdict: A Top-Tier Street Adaptation

The X 18.1 model is one of adidas’ best adaptations, alongside the Predator, and is designed to appeal to trainer lovers. The new adidas X will be seen both at the World Cup and on the streets.

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