Indirect vents protect against liquids, dust and smoke while permitting indirect ventilation, UV absorbing polycarbonate lens are Anti-Fog, The high quality green tinted flexible PVC body ensures a proper fit and fits over most prescription glasses, Adjustable 18"" (45, 72 cm) green elastic headband, Dimensions: 6""W x 4""D x 2""H, Freight Class: 70, Cubes: 1, SKU: DVSFWC1661