Comfort and renewable fabrics are increasingly important in S/S 2021. Based on adaptability, functionality will be more and more prominent. In search for optimized technology and innovation of fabrics, consumers demand for personality and sustainability. In S/S 2021, clothes for yoga and Pilates will be more durable and practical. Functional knitted items, matte quick-dry fabric and sustainable polyester fabrics are used to create leggings and base-layer, and to protect the wearer during exercise.

More than just losing weight and getting in shape, primordial exercisers devote more time to their health and reverence for nature, creating new forms of exercise and eating habits. They advocate the outdoors and the "earth gym", drawing inspirations from nature and also influencing the use of color. Collaboration collection of Adidas × Wood Wood inspires the theme, showing the amiable tones. A/W 20/21 emphasizes more the perception of the environment, and consumers pursue physical and mental strengthening. Natural colors should be combined with functionality to be fit for the market, and the colors need to be sustainable dyed.

In recent years, the circular all-in-one machine has been gradually popularized, which eliminates most stitching of knitwear and enables the knitwear more well-fitting, with more delicate craft details. Together with the breathability brought by special structures of knitting, knitted sportswear is more and more popular. In addition to sportswear brands like Adidas which have knitted sportswear, luxury brands like Prada also release knitted sportswear in A/W 2019.