The Nike women's Flex Run 2021 'Iris Whisper' is a sustainable running shoe that showcases a delicate pastel colorway. This shoe is crafted with a minimum of 20% recycled materials by weight, aligning with Nike's commitment to environmental conservation. The upper boasts a soft lavender shade, made from stretchy textile material, and is adorned with the iconic embroidered Swoosh logo. Additionally, the upper is reinforced with no-sew overlays to enhance durability. The foam sole unit of the shoe provides lightweight cushioning and features an extra-plush Solarsoft core, ensuring optimal comfort during runs. The outsole is designed with deep grooves in yellow, showcasing the foam compound in between. These grooves serve a dual purpose: enhancing flexibility and facilitating natural foot movements. With the Nike women's Flex Run 2021 'Iris Whisper,' runners can experience both style and sustainability in one shoe.