Shampoo Hat For Bathing: Babies, Adults, Children, Elderly Care, Kids Blue A shampoo hat that allows water to flow from the back, a design that didn't exist before. It can be used with peace of mind by those who have had eye surgery or those in elderly care. It is also recommended for those who don't want to get their face wet after applying makeup. [21-Step Adjustment Possible] Can be used by adults and children. Fits head circumferences from 40 to 61 cm. [Gentle Material] Made of soft silicone material, so it can be worn without causing pain. Purchased in January and has never been taken out of the bag, as there was no opportunity to use it.