Recycled nylon is an ecofriendly material that uses discarded nylon products, such as fishing nets, carpets and plastics, and recycles, purifies and regenerates them. It can be recycled indefinitely without affecting the quality. The production process of Recycled nylon can be divided into two steps: resource recovery and material regeneration. Resource recovery refers to collecting various nylon wastes from around the world, such as fishing nets, waste fabrics, carpets and industrial plastics, and recovering usable nylon materials after sorting and cleaning. Material regeneration refers to purifying nylon waste through a chemical regeneration process, restoring it to the purity and quality of virgin nylon. This process can be repeated indefinitely, achieving the recycling of nylon. There are also some patented methods, such as using acidic catalysts and activated carbon to hydrolyze, purify and precipitate waste nylon, and obtain raw materials such as adipic acid and hexamethylene diamine. Some fashion brands, such as Prada, have started using Recycled nylon to make bags and clothing, to show their commitment and innovation to sustainable development.Recycled nylon is also widely used in underwear, because it has good elasticity, breathability, moisture absorption and perspiration, and wear resistance, which can improve the comfort and durability of underwear. The quality of Recycled nylon underwear is comparable to that of virgin nylon underwear, or even better sometimes. Because Recycled nylon is obtained through a process of purifying and regenerating nylon waste, it can ensure the purity and quality of nylon, without affecting its performance and characteristics. Some brands, such as PEOPLE, RubyMoon, Lululemon and so on, use Recycled nylon to make underwear, swimsuits and sportswear products, which not only show a sense of fashion, but also reflect their care and responsibility for the environment.