The Avid Revolve 1 Person Overwrap is designed to enhance the protection of your 1-Person Revolve Bivvy by creating a dual-layer system. It offers improved thermal insulation, keeping you warm in winter and cool in summer, while the twin skin greatly reduces condensation and moisture build-up. The overwrap also creates additional space at the front of the shelter for storing extra footwear, guest chairs, and more, with a full zip door that enables a significant expansion of the internal footprint of the bivvy. It is exclusively designed to complement the Revolve 1-Person Bivvy and is supplied with heavy-duty pegs. - Main outer Fabric: 100% polyester. - Total Weight: 1.5kg. - 10,000mm hydrostatic head Khaki fabric.