I've been using these since my newborn days, and they've lasted a whole season! There are no noticeable stains or damage, and they're still in great condition! As expected from Uniqlo baby underwear, they were very easy to use and great. My twins are on the smaller side (both height and weight are below the growth curve), but the 70 size fit perfectly without being too big. - Brand: UNIQLO - Size: 70 - Type: Wrap style - Material: 100% Cotton