1.Fashionable & nice appearance. 2.Unique spring structure -Advanced silicone vacuum suction technology ,long life&never leakage. 3.Never occur block,even the debris dropped into,can be suck out successfully.. 4.Spring is no needed, solve the rustiness and spring faiure problem caused by it. 5.ABS material , cannot be break at all ,truly durable for using . 6.Variety of detergents: soap ,shampoo,cleanser.