Wool knitwear can stay in rotation for years when care matches the garment. There is no single washing method for every sweater: check the label first, including any instructions for linings or decorative details.
Before cleaning
Air a garment between wears if appropriate and attend to marks promptly according to the manufacturer’s guidance. Woolmark notes that knitted wool garments can be folded for storage, while woven wool garments may be hung on suitable hangers. Empty pockets and close fastenings before storing.
Follow the label
Some wool items permit machine washing on a specified cycle; others require hand washing or professional care. Use the temperature, detergent and process recommended for the particular item. Do not wring a wet knit or hang it by the shoulders when the weight could distort its shape. Woolmark recommends drying wool away from direct heat and sunlight.
Store thoughtfully
Clean garments before longer storage and let them dry completely. Fold them in a clean, dry place, and follow product directions if using moth protection. Repair a loose seam or small hole promptly where practical. For valuable or delicate pieces, a professional cleaner or repair specialist can advise on the safest treatment.