Adizero Boston 12 M - IF9209 Size:9.5 Nike Power fabric provides a

Nike Power fabric provides a range of stretch and support

Made of recycled polyester with great stretch and featuring slits at sides

Mesh-lined ventilation at back yoke

The built-in rechargeable battery lasts up to 6 hours on a full charge

This helps provide cloud-like comfort while creating an energized feel at toe-off

Adizero Boston 12 M - IF9209 Size:9.5 Nike Power fabric provides aFAST TEMPO TRAINING SHOES WITH HIGH PERFORMANCE TECHNOLOGY. The Boston Marathon is a race. But it's also a goal, and a training plan and all the days it stays on your mind before the big one. The adidas 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 fiber infused ENERGYRODS 2. 0, which limit energy loss underfoot. They're fast, but that does