Constructed from an Advanced ThermoPoly shell, the T-381 from THH features a 3-snap visor and two operable front vents for hot days. Advanced ThermoPoly shell Removable/Washable 3M Scotchguard™ moisture-wicking liner 3-snap visor Flip-up/Bubble shield available (sold separately) EZ-fit for eyeglasses Meets or exceeds D.O.