I have a Stratosphere Bivvi Shelter which is brand new never used.
Specifications: Material top: Waterproof but breathable 40D nylon ripstop.
Materials bottom: 70D nylon taffeta with polyurethane coating.
Dimensions: 229 x 94 x 107 cm. Dimensions packed: 35.6 x 10.2 x 15.2 cm.
It costs about: 200 $ but I ask 175 $.