These are made out of a cotton fabric, they have an elastic and a faux tie on the waist!

• Wash in cold water
• Fit True to Size
• 95% Cotton 5% Spandex
• Measurement in inches:
  Length: 0-3m 5, 3-6m 5, 6-12m 5.5, 18m 5.5
  width: 0-3m 7, 3-6m 7.5, 6-12m 8, 18m 8.5