Adidas launched a new sneaker on Friday with a 3D-printed sole that it plans to mass-produce next year, part of a broader push by the German sportswear firm to react faster to changing fashions and create more customized products.

Adidas already lets people customize the color and pattern of shoes ordered online but new 3D printing methods will make small production runs, limited edition shoes and even soles designed to fit an individual's weight and gait economical.

Rivals Nike, Under Armour and New Balance have also been experimenting with 3D printing but have so far only used the technique to make prototypes, soles tailored for sponsored athletes and a handful of high-priced novelty shoes.

That's because traditional 3D printers are slower, more expensive and often create an inferior product than the injection moulds for plastic that are currently used to produce hundreds of millions of shoes each year, mostly in Asia.

However, Adidas says its new partnership with Silicon Valley start-up Carbon allows it to overcome many of those difficulties to produce a sole that can rival one made by an injection mould, and at a speed and price that allow for mass production.

"This is a milestone not only for us as a company but also for the industry," said Gerd Manz, Adidas head of technology innovation, announcing the launch of its new "Futurecraft 4D" shoe. "We've cracked some of the boundaries."