here, we'll compare two of the most popular models, the Adidas Ultraboost 22 and the UA Flow Synchronicity ... and springy cushioning from the BOOST midsole, but the new grippy rubber outsole ...

And, these days, a really good running trainer doesn't come cheap. The Adidas Ultraboost 22 trainers come with a Boost midsole, a recycled sock-like upper, and a nifty Adidas Linear Energy Push for an ...