This is a combination of numbers and letters located at the bottom of the shoe label. According to Adidas regulations, each pair of shoes will have a different component code. Moreover, if they are genuine shoes, the component code on the left shoe and the right shoe will be different.

The fabric. The main point of difference between the Gazelle's and any other gym trainer is the fabric. The suede exterior keeps these trainers resolutely fashion-facing, and the large variety of colours, from understated monochromes to fun bright colour-clash options, keeps the Gazelle feeling fresh and modern.

OG – meaning original – is a reference to the shoe which was first introduced in 1968 and since that day its appearance has barely changed at all. Despite that, it has remained ever popular and is without a shadow of a doubt one of the brand's all-time best-selling designs.

What I've found with both of my pairs of Gazelles over the years is that they run big! I'm normally a 8.5-9 and always order the women's 8 for a perfect fit.