Unlike any other mask, the F&P Evora is simple, intuitive and comfortable from the very first time you put it on. Evora's unique Cap-Fit is worn just like a cap so it's naturally easy to put on and take off. The compact floating cushion gently wraps around the nostrils, without pressing inside them, for a soft, secure seal. F&P Evora is available in four sizes Small, Medium, Large and Wide to fit a wide range of users.