Advice for Road Runners: If you're looking for propulsive and comfortable running shoes for your speed-focused runs, the adidas Women's Adizero Boston 12 Running Shoes should a be very good option. 

Underfoot Feel

The adidas Adizero Boston 12 Running Shoes should feel stable, propulsive, and comfortable. This is down to a unique midsole construction that utilises a range of technologies.

Firstly, a top layer of LIGHTSTRIKE PRO - adidas' most resilient foam - offers amazing energy return. In contrast, a soft, yet less responsive bottom layer of LIGHTSTRIKE 2.0 FOAM offers more stability and durability. 

Finally, glass-fibre infused ENERGYRODS limit energy loss and improve propulsion. Although, it's worth noting this offers a more flexible feel in comparison to adidas' carbon-infused system that features in the Adios Pro 3. As a result, the midsole should feel very comfortable for weekly workouts.

Upper Fit

The adidas Adizero Boston 12 Running Shoes fit spaciously in the forefoot and offer a lot of room for feet to splay. At the same time, a supportive midfoot and ankle construction should lock your feet into place.

Ideal Run Type

Even though the adidas Women's Adizero Boston 12 Running Shoes don't offer as much propulsion as super-shoes, they should help you run faster. They're also likely to feel more comfortable across a broader range of paces in comparison to stiffer super-shoes.

All of this means the Boston 12 Running Shoes are great options for weekly speed sessions - such as intervals, tempo runs, and hill repeats. They should also perform well on long runs that build in pace. 

Technical Features

• Approximate weight: 215 grams
• Forefoot stack height: 31 mm
• Rearfoot stack height: 38 mm
• Drop: 7 mm
• Upper contains a minimum of 50% recycled content
• Continental™ Rubber outsole

Sizing Advice 

Shoe size is a personal preference and everyone's feet are different, but we want to ensure you avoid any pain or discomfort from bruised toenails, rubbing, blistering or pins and needles.

Your running shoes should have enough width to allow you to spread your toes and should have some space at the front (we recommend having a half to one thumb's width of space from the end of your longest toe to the front of your running shoes).

This usually means that your running shoe will be at least a half size bigger than your regular shoe size though this can vary from brand to brand.