Larger Size: Lighthouse Diapers SUPREME™? is a bigger Swim/Cover designed for toddlers and babies who are tall and weigh about 15-55lbs. Why We Love Lighthouse Swim: Perfect for BIG toddlers and for children with special needs. Moves with baby, lightweight TPU feels softer than other cloth diapers and allow for more movement. Use any insert you prefer! One-Size Swim Diaper or Diaper Cover fits babies 15-55 lbs.