The Powa™ Valve Pack contains 2 Powa™ Valves that can be used in the majority of Respro® Masks. These valves have better breathing characteristics at higher airflows, i.e. when breathing heavily in sports or when engaged in strenuous physical exertion.
You can use Powa™ Valves with Techno™ Filters or vice-versa. The Sportsta™ Filter gives better inhalation characteristics over the City™ Filter and the Techno™ Filter.
This combined with Powa™ Valves is why the Sportsta™ Mask is perfect for use in sports activities.