With the Exhale+ Shower Filter, Kohler takes shower filtration a step further by adding the benefits of Vitamin C for better filtration performance. In keeping with the proven benefits of a KDF filter, which removes harmful substances, adding a Vitamin C filter improves filtration by removing up to 90% of chlorine. This filtration process provides a healthier shower experience for your skin and hair. The large pill-shaped design is warm and friendly, with an off-white opaque glass upper half. The filter can be easily installed on most exposed shower bars and does not require any tools.