Theresa is the avant-garde design corner valve. Its two features make it an absolute must in the bathroom. Feature one, compare with traditional corner valves which have “rotating handles”, Theresa’s 90 degree on / off handles make the “switching” much easier. Moreover, it has two different colors to distinctive cold / hot sides. Feature two, you would find a coin slot on Theresa corner valve, simply use a coin to open it, there is a net filter inside. It blocks the dirt from the source, prevents the hoses and mixers from blockage and damage. Simple features, but truly concern on user experiences, easy and healthy.