We’ve already established that 3-D printing is the next big thing in the running industry. For those of you still unfamiliar with the high-tech process, here’s a close-up image of the technology as it’s used in the midsole of the New Balance RC5000 racing flat.

The orange part of the sole has been constructed using the 3-D printing technique, which builds one layer at a time. The process allows designers to achieve forms unattainable with standard technology—not to mention it saves both time and money.

[image via Runner's World]

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