1, refused to use the washing machine. The washing machine will spin the pants dry when washing them, and the pants will lose the weight of water, so they will not fall off more easily. After drying, there is still a bulge on your pants. Don't use the washing machine, and don't let your pants dry. Keep your pants moist and dry.

2. Straighten the knees of pants and dry them. Don't wring it out after washing, just throw it into the water. Then align the two trouser legs by hand and pull them out at the knees. The flatter they are, the less obvious the bulge is after drying.

3. iron your knees. After the trousers are dried, put them on the ironing board or on the wooden table without ironing board. Then flatten the bulging knees with an iron. Don't use the hanging iron. Without strength, the bulging folds at the knees are not good.

4. Keep ironing once a week. A picky friend can get a perm once a week. It is usually enough to iron once or twice, and it is once when washing pants. Keep this frequency basically, and the bulge at the knee of trousers will not be seen.

5. If it is pants made of other fabrics, the knee also bulges, and this method can also be used. Also, when buying pants, don't buy them too tight. If your pants are too small and tight, you will bulge if you walk too hard.