Small size: wide 29 * high 38 * bottom thickness 12CM (recommended for children in grades 1-3)
Large size: wide 30 * high 41 * bottom thickness 14CM (recommended for children 3-6 grade use)
The bag is a universal size (width 29 * high 32 * bottom thickness 10CM)
A款 蝴蝶结 
A款 蝴蝶结
