Create a peak to the front of your Tempest giving greater protection from the rain without compromising your view of the lake by using the Tempest 150 Skull Cap. Not only will the Skull Cap give additional protection from the weather, it also adds a second skin to the top of the shelter which helps combat condensation and retains heat – and unlike a full overwrap, it can be left in place when the bivvy is packed down. Manufactured from our upgraded 10,000mm Hydrostatic Head polyester fabric.