If properly cared for these maternity leggings should last through multiple pregnancies. Make sure you get the right size. Some moms may end up having to get multiple sizes so that the leggings fit properly throughout their pregnancy. As your body grows you may move up in size. The most important things when worrying about durability in leggings it to make sure they aren’t stretched too thin. If the material is stretch too much it can cause it to run or snag more easily and put a strain on the seams. Also, make sure you follow the washing directions to the T and you should be all set for many months of comfort.