Size Chart: Size 66----Suggest Weight:6-8 Kg-----Age:0-4 Months Size 73----Suggest Weight:8-9.5 Kg-----Age:4-8 Months Size 80----Suggest Weight:9.5-10.5 Kg-----Age:8-12 Months Size 90----Suggest Weight:10.5-12.5 Kg-----Age:12-18 Months 100% brand new with great quality; Soft and skin-friendly 100% cotton fabric, no ball, no fading, no fluorescent agent, healthy and environmentally friendly Multiple sizes are available: 66-90(0-18Month)