The size isn't explicitly stated, but it's listed as 35x50cm, so please use that as a reference. I think it's a size that can be used for children aged 1 to 5 years old. The colors and design suit both boys and girls (*^^*) Yellow and white polka dot sleeper with duck embroidery. - Color: Yellow and white polka dots - Material: 100% polyester - Size: 35x50cm - Design: Front opening, character embroidery (duck) Thank you for looking.