As in "leggings -high-waisted". It ends up being more effective than searching for "mid-rise" (or whatever). Most brands don't give many details of the clothes, so if you search FOR something, a whole lot of stuff gets left out. But if you can exclude things, it only excludes the items that have given enough details. Because searching FOR details is too narrow, I just barely use the search function and have to scroll through 50 pages of items