Children's Yukata Colorful butterfly pattern Adjusting the koshiage (waist adjustment) should make it fit a 5-6 year old, but as I am not a professional, please check the measurements in the photos. Length from shoulder to hem: 76cm (pic3) Sleeve length: 63.5cm (pic4) Back width (from center of neck to sleeve edge): 43cm (pic5) Koshiage (waist adjustment): 14.5cm (pic6) Kataage (shoulder adjustment): 8cm (pic7)