The all-in-one tool kit for faster cleaning and drying of your Camel Bak Crux(TM) reservoir. Features. a Two brushes and cleaning tabs keep your reservoir taste-free. a Reservoir brush and Pure Flow(TM) tube brush. a Periodic cleaning with Camel BakA(R) Cleaning Tabs(TM) keeps reservoir and tube free from taste and odor. Details. a BPA/BPS/BPF FREE: Yes.