If you want to really get in there, you can use small paintbrushes, screwdrivers, awls, or pieces from phone and glasses cleaning kits to clean out nooks and crannies. [2] X Research source
If you are cleaning Nike Flyknits, use cold water, as hot water can damage the fabric. You should also use a mild cleanser like Jergens Mild or Purpose rather than laundry detergent, which has chemicals that could affect the dye in the Flyknit fabric. [4] X Research source
You can stuff your shoes with paper towels to help them keep their shape, but bear in mind that they will take longer to dry without any airflow. Putting a tumble dryer fabric sheet in each shoe can help them dry faster, and freshen them up a bit. [6] X Research source
