The rollers rub against each other to evenly distribute the soap on the clothes, and also contribute to the formation of foam, which improves the effectiveness of the soap. Wide range of applications : the size of the soap dish is 6.6 x 7.1 x 12.2 cm, it is suitable for most sizes of solid soaps, body soaps and handmade soaps in the market and can be used for washing, hand washing and bathing. Reasonable design: built-in spring to increase friction during use; hollow design, can completely place the soap. Keeping clean: 2-in-1 function for washing and storing, no need to take out the soap when using, not afraid of slipping, very convenient to use; water filter and ventilation design, excess water will not remain, dust-proof and moisture-proof. Ideal for household and public use, such as at home, at school, office, hotel, restaurant, travel, camping, etc.