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