Nike’s new Adapt Huarache shoes work with voice commands on Siri and Apple Watch, allowing owners to adjust the fit and lace and unlace their sneakers, CNBC reported on Thursday (Aug. 29).

This redesign of the 1991 Nike Huarache uses FitAdapt self-lacing technology, similar to the Nike Adapt BB shoes that were announced in January. The latest iteration of FitAdapt allows for more personal preferences, environments and situations.

The new shoes have various presets for the optimal fit for different foot types and activities. The presets are chosen by selecting a particular LED light on the sole. They feature the same neoprene bootie and supportive exoskeleton as found in the original 1991 Air Huaraches.

The Adapt Huarache is scheduled for a Sept. 13 release. Pricing was not announced, but the Adapt BB shoes were sold for $350.

The technology is controlled by a multi-faceted Nike Adapt app and runs from a midfoot motor, the company said in a blog post.

Nike also launched Nike Fit in North America, a new service within its app that will scan a user’s feet to determine their correct shoe size. The company said it sees a real need for the service, because at any given time, 60 percent of consumers are wearing the wrong shoe size, which can lead to discomfort and even injury.

The service launched in the U.S. in May and reached Europe this month. It is available within Nike’s mobile app and in its stores. Customers can scan their feet using a smartphone at home, then will receive precise shoe recommendations down to the millimeter.

In addition to helping its customers find the right fit, Nike plans to use the data from the Nike Fit scans to create shoes that fit better, as well as to stock a better mix of sizes at its stores.