The adidas Pureboost Go running shoes in black and grey feature a textile upper with a lace-up fastening for a secure fit. These shoes are designed to be lightweight and supportive, with a responsive Boost midsole for excellent energy return. They also offer heel steadiness for improved stability and are made from top-notch materials. The fit is regular, and they have a flexible Stretchweb outsole with a Fitcounter heel for a natural, unrestricted fit. Both the upper and lining are made of textile. The product reference number is B37803.