Next February, Salomon will be introducing a running shoe for the circular economy, using recycled polyester that can subsequently be re-purposed for the brand’s ski boots, in time for release in winter 2022. The fruit of a purported three years’ research at the brand’s Annecy Design Center in the French Alps, the Index.01 is designed to be recycled. The shoe’s upper is made of recycled polyester, its sole of nitrogen-infused thermoplastic polyurethane (TPU). The insole – itself recycled – is removed from the worn-out shoe, so that upper and sole can be separated and recycled separately. The polyester goes toward new fabric, while the sole is ground into pellets and combined with new TPU to make other Salomon products. According to the French outdoor company, owned by Amer Sports, the Index.01 is also designed for performance, with TPU-based foam cushioning and its R.Camber (rocker) geometry. It weighs 285 grams, has a 9 mm drop and a molded sock liner of fully recycled EVA foam and polyester. Customers can print out a shipping label from the Salomon website and return their worn-out shoes to the nearest collection center (in Europe, North America or Asia-Pacific) free of charge. The Salomon ski boots made with recycled Index.01 shoes will come during the winter of 2022 in packaging certified by the Forest Stewardship Council (FSC), with no stuffing paper. The recycled material of the upper can also be used to make fabrics.