Super absorbent and soft bamboo stretch french terry. With 70% bamboo, 25% organic cotton, plus 5% spandex, these have the perfect amount of stretch to get a perfect fit. They work perfectly with any closure, such as Snappi, pins, biongo, or Bandie. They can be pad folded for added absorbency in pockets or covers. Newborn measures approximately 20"x20" 7-15lbs, infant size is 24"x24" 15-25lbs, and the OS is 28"x 28" and will fit up to approximately 35lbs. Due to the fact these are hand cut there may be variances in size, I try my hardest to get as close as I can.