The sweater widens horizontally. According to your figure and required width, you can wear it on your body and sew an elastic band with similar color. If it is lengthened vertically, it can be stitched vertically. Elastic thread can be purchased online, and it is also possible to sew the same color needle and thread unconditionally.

Sweater shrinkage method 2: high temperature soaking

In view of the fact that some sweaters will become loose and ill-fitting after being worn for a long time, they can be soaked in hot water with the water temperature of 70 ~ 80℃ 10 minute or so, and then dried flat (be careful not to overheat the water to avoid shrinking too small).

Method 3 of restoring woolen sweater: soaking in neutral detergent.

Sweater washing water temperature is controlled at about 35 degrees Celsius, and it is washed with advanced neutral detergent. The ratio of water to detergent should be 3: 1.

Shrinkage method of woolen sweater 4: high temperature cooking

Wrap the sweater with a clean white towel (preferably a long bath towel), put it in a steamer of an electric rice cooker, steam it for 10 minutes, take it out, shake it vigorously after taking it out (but don't use too much force, otherwise the woolen sweater fibers will straighten and deform), then carefully reshape the loosened sweater to its original shape, put it flat on a thin plate (if there is a sieve, it can be placed on the back of the sieve), and use a clothes peg.