Convenient HandyStrap? allows you to keep the mask in an at-the-ready, hangdown position during brief periods of downtime. Ventex? valve facilitates heat dissipation, enabling easier breathing. Dura-Mesh? shell holds up in extreme heat and humidity. Soft, foam cushioning provides greater comfort. Respirator Type: Half-Face Mask; Rating: N95; Resistance: Particulates; Material(s): Dura-Mesh?/Softspun?.