Our sleep sacks, hoods, and similar items are machine washable on gentle cycle with cold water and can be tumble dried on low/delicate. Hoods and sleep sacks retain a lot of water, even after a spin cycle, so 2 dryer cycles may be necessary. Do not wring out. Do not bleach. If ironing is desired, turn inside out (all but our 2 layer sleepsacks!) and use low heat.