Mens Adizero Boston 12 - Cloud White/Core Black-Semi Lucid Red Mens Size:US12.5 – Next-gen optical heart rate

– Next-gen optical heart rate and SpO2 sensors

NOTE: The norda™ 001 tends to run small

it can also work at marathon distance for those chasing a firmer

using ultra lightweight and durable aerospace grade titanium

The design team managed to reduce the upper weight even further

Mens Adizero Boston 12 - Cloud White/Core Black-Semi Lucid Red Mens Size:US12.5 – Next-gen optical heart rateThe Boston Marathon is a race. It's also a goal. And a training plan. And all the days it stays on your mind before the big one. The Adizero Boston 12 Shoes are built for mid to long distance running. They bring a race day feel to training with a propulsive feel that comes from the glass fibre infused ENERGYRODS 2. 0, which limit energy loss underfoot. They're fast, but that does not come at the cost of durability the midsole layers ultra light