This is a lightweight type of zelt that weighs only 9.5 oz (280 g) (1 to 2 people). You can keep it in one corner of the bag to use it for a break in the wind, rain or snow, or when you are not able to stop the vibrak. Of course, it can be used as a lightweight tent by using the pole set (sold separately). The unit has been treated with a urethane coating, so it can withstand light rain. Does not interfere with poles and ventors. The floor is a standard type with a string.