Machine wash with similar coloured laundry in warm or cold water. Never use hot water or chlorine bleach. Tumble dry on a low heat setting, making sure to dry the sack completely.
Please Note: Before putting the Sleepea in the washer, always attach the hook and loop wings to each other and zip the sack completely closed. That will avoid damage that might be caused by hook and loop clinging to other items in the load.