100% Pima Cotton Imported Button closure Hand Wash Only PIMA COTTON-Made With great quality for a long lasting pajama. ULTRA SOFT - Made with 100% Pima cotton the softest material in the world. Size- Weight- Height- 0/3M 10-14lbs 21.5"-24" 3/6M 15-18lbs 24.5"-27" 6/9M 19-22lbs 27.5"-29" 9/12M 23-25lbs 29.5"-31" 12/18M 25-27lbs 31"-33" 18/24M 28-30lbs 33.5"-35.5" 2T 30-32lbs 35"-38" 3T 32-35lbs 38"-41" 4T 35-39lbs 42"-44.5" 5T up to 56lbs 45"-47.5" 6T up to 62lbs 48"-50"