If knitted clothes become loose because they are worn for a long time, we can use a steam iron to help them. First, put the steam iron about two centimeters above the clothes with one hand, let the steam soften the fibers, and then set the sweater with the other hand. With both hands like this, I hope that the sweater can be restored to the original state of tight fibers as much as possible.
When drying a sweater, in order to avoid the sweater getting bigger and longer, it is best to spread the sweater flat or spread the umbrella directly. If you feel that it is not easy to dry, you can also hang the sweater with two or three hangers and put the tail on the hanger, so that the sweater will not be deformed.