The best just got better! The Extreme TX Bivvy represents the next generation of our legendary TX Shelters, offering best in class quality and superb protection against the elements. The zip off front panel can be adjusted to three different door settings which allow for a change in wind direct without moving the entire bivvy. The large front and rear vents along with the PVC door and window panels also makes this bivvy very adaptable to the different weather conditions anglers face. Overwrap available.