Measurements:Mask: One size fits mostHose: 22.1 length, 40mm threadBottle holds up to 1L of liquid Materials:Mask: Silicone, aluminum, polycarbonateHose: Rubber, aluminum, fabricBottle: HDPE, PVC Color: Black, White Note: One size fits most Key Features:Premium silicone head harnessOne-way breathing valveIncludes hose and aroma bottle