This pajamas is US Size,made of high quality.Fit well and comfortable to wear. US Size Measurement X-Small(US 0-2): Chest 33.0", Clothes Length 24.4", Pant Length 14.5". Small(US 4-6): Chest 36.2", Clothes Length 25.2", Pant Length 15.3". Medium(US 8-10): Chest 40.1", Clothes Length 25.9", Pant Length 15.7". Large(US 12-14): Chest 44.0", Clothes Length 26.7", Pant Length 16.3". X-Large(US 16-18): Chest 46.2", Clothes Length 27.5", Pant Length 16.9". Please allow 1-3cm measuring deviation due to manual measurement. If you are confused with our size,don't hesitate to contact us. The precise color varies from the real one because of the different lighting conditions and specific monitors.