Sometimes — but only carefully. The wrong wash can shrink or felt wool permanently.
Check the label first
Look for a "machine wash wool" or "superwash" note. If it says hand wash or dry clean only, follow it.
If machine washing is allowed
Use the wool/delicate cycle, cold water, a wool-safe detergent and a mesh bag. Skip the spin or keep it very low.
Why heat is the enemy
Heat and agitation make wool scales lock together (felting), which shrinks the knit and can't be reversed.
The safest route
When in doubt, hand wash cool and dry flat. It takes minutes and protects the fibre.
See care-friendly knitwear for men and women.
FAQ
Can you machine wash wool sweaters?
Only if the care label allows it. Use a wool or delicate cycle, cool water, mild detergent, and dry flat. When in doubt, hand wash.
Will machine washing shrink wool?
Heat and agitation cause felting and shrinkage. A cool, gentle cycle and flat drying keep that risk low.