This Reusable Mask has breathing valve and adjustable strings so you don't have to worry about the fit. It is made from breathable premium cotton ,easy to wash. This premium reusable cloth masks are fitted with a five-layer exhalation valve for maximum comfort: breathe easier, stay cooler and reduce fogging on your eyewear thanks to its outflow design. Ideal for those who may experience a suffocating feeling from wearing a face covering. Sewn with care and experience, our masks come with a nose-wire and adjustable ear loops to help ensure a proper fit and prevent slippage; the face-conforming nose-wire is also extra insurance against fogging on glasses.