After a lot of wear, your down booties may need to be washed. You can do so by spot cleaning, soaking, or machine washing on a gentle setting. Make sure to use a down-friendly or delicate detergent to keep your booties in their best shape.
To dry, you’ll want to make sure you use a low-heat or no-heat setting and add dryer or wool balls to the dryer basin in order to help break up clumps of wet down. We also like to set them out in a sunny place for a few hours to ensure they are fully dry before packing them back up into a stuff sack or storage.