Protect your ears, hair and scalp from hot air and drying in the sauna room, this sauna hat is the authentic sauna goods of the sauna, Finland and Germany. Because it is made of linen material, it is smooth and lightweight, it increases strength when wet, and is resistant to washing and dries easily. Machine washable, so you can always keep it clean. Caution: Please use neutral detergent when washing, and do not use chlorine detergent or bleach. ·There may be cases where it will shrink after washing. If you want to machine wash it, fold it and put it in a laundry net and wash it in cold or warm water to reduce shrinkage. Please be careful not to rinse off detergents as this may cause yellowing or staining. Similarly, sweat will cause yellow and stain, so please wash it immediately after use. Dehydration may cause wrinkles, so please do not dehydrate or use it in a short time. After washing, please carefully stretch out the wrinkles and dry in a shady and ventilated place. Take it compactly and enjoy a safer & more comfortable sauna life!