Jelly pants are generally made of polyurethane, which is more elastic and soft and very comfortable to wear. The problem of preventing jelly pants from loosening after wearing for a long time depends on whether the pants you buy are of the right size or good material. If the jelly pants are made of good material and have the right size, they can be properly washed and dehydrated to restore elasticity and avoid long-term exposure. Generally speaking, washing clothes often will increase its wear and slack, so when wearing jelly pants, try to avoid wearing the same pair of pants every day and prepare more pairs to protect the elasticity and brightness of jelly pants.