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One shoe company has decided to team up with Spotify, a digital music service, and to launch this new partnership they have created the Reebok FitList shoebox. Essentially, this hi-tech shoebox doubles as sound-reactive speakers. What this means is that they become "interactive speaker systems with LED lights that glow in rhythm to music, ambient sound and touch," as succinctly described by PSFK.

Designed and handcrafted by Pittsburgh-based technology studio Deeplocal, the Reebok FitList shoebox rings in the actual FitList app through which users can generate personalized playlists by selecting their activity, timeframe, intensity level and favorite artists. It also has playlists created by Reebok-sponsored athletes and artists such as Jordin Sparks, Eli Manning and Tara Stiles.