At its core, Considered Design is about reducing or eliminating toxics and waste, increasing the use of environmentally preferred materials and using Nike's innovation to create more sustainable products. But the true beauty of Considered Design is revealed when it achieves those goals while also improving how the product performs for athletes. Such is the case with the Pegasus 25.

With a dedicated following of elite and everyday runners, the Pegasus has been an iconic, top-selling shoe for 25 years. The challenge with the Pegasus was how to make it better. The answer was to make it Considered.

A big focus of Nike's Considered Design philosophy is reducing materials - both in the final product and in the material left over. With the Pegasus 25, fewer materials in the upper reduced the shoe's weight by 1.4 ounces, making it an impressive 13-percent lighter than the previous Pegasus. Less weight means less waste; less wasted material when it is made; less wasted energy when it is used. And that's a win for sustainability and performance.

We used Environmentally Preferred Materials (EPMs) wherever possible. The EPMs in the shoe's upper have a high recycled content. The outsole uses Nike's environmentally preferred rubber and recycled Nike Grind. And the Nike Air-Sole units, which provide cushioning in the sole, have 83-percent recycled content.

Speaking of Nike Air-Sole units, by designing a hyper-efficient, "nested" pattern for Air-Sole production, we were able to further reduce post production waste. And we didn't stop innovating with the Air-sole material and manufacturing process; we developed a more sustainable way to install them too. By using best-practice manufacturing, the Air-Sole and midsole components of the Pegasus 25 are attached using water-based adhesives.

From elite running champions to your next-door neighbor, the Pegasus has been a favorite performance running shoe for more than a quarter century. The Pegasus 25 continues that tradition of leading - both on the track and as an example of how Considered innovation can drive both sustainability and performance.