The laundry bag is designed to separate dark and light clothes to prevent dye transfer and mixing; it can also wash baby clothes and underwear separately to avoid crosscontamination and support hygienic washing. It reduces friction and pulling in the washing machine, helping prevent deformation and pilling of silk, wool and other fabrics; it protects sequins, embroidery and other decorations from coming loose, prolonging garment life. The bag is subdivided into fine mesh, coarse mesh and different sizes. Fine mesh protects delicate fabrics from snagging, while coarse mesh provides stronger cleaning for heavier clothes. The threedimensional shape accommodates items such as sweaters and underwear for tailored washing needs. With a zipper design for easy use, clothes can be loaded and sorted without tangling after washing; after rinsing with clean water, garments come out clean and dry quickly, and the bag remains spacesaving for storage. Use scenarios Family laundry with mixed fabrics and colors: use the bag to separate dark and light items, and to wash baby clothes and underwear separately to avoid crosscontamination and dye transfer. Delicate or embellished garments: use the fine mesh for silk, wool, laces, sequins and embroidery to minimize snagging and preserve decorations. Heavy or bulky items and everyday wear: use the coarse mesh for items like sweaters, towels and thicker fabrics to achieve thorough cleaning while protecting the fabric integrity. Travel or organized laundry: multiple sizes and mesh options help keep outfits or workout clothes neatly separated and easy to sort after washing, while drying quickly and saving space.