The instep is narrower in the UltraBoost 22 and sits slightly higher on the ankle. The tongue is also now more cushioned, which feels reassuringly comfortable.Īdidas Ultraboost 21, left, and Adidas Ultraboost 22 (Image credit: Adidas) This small change seemed to prevent the pressure and hot spots I’ve experienced on the top of my foot. There’s still the same plastic lace system as in its predecessor, but the lower laces are connected with two material loops rather than going through the plastic. I’m a UK 5 and found the shoe to fit true to size. It’s still sock-like, but I no longer feel like I’m losing the circulation in my toes after walking home from parkrun, with the bootie upper feeling like it has a lot more give. Adidas has used Primeknit+ yarn, which contains 50% recycled plastic, to create an upper that has more structure and support. The shoe definitely feels more comfortable underfoot. The result? I’ve run approximately 50 miles in the shoe, over a number of different sessions, and am impressed with the fit. Adidas says the tweaks to the upper and the fit of the UltraBoost 22 make the shoe 4% more efficient underfoot than the UltraBoost 21 for female runners.
The shoe has the same extended heel as the UltraBoost 21, designed to make the shoe more comfortable for heelstrikers, and the same Linear Energy Push system on the outsole to produce a snappier toe-off.
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