Taiga® RainSheets (Tarps)

If mosquitos are not an issue in the area or at the time of year, these lightweight  RainSheets (Tarps) could be an excellent choice.

Taiga RainSheets are waterproof & breathable, and weigh only a minuscule 175g for a 5'x9' size. 

Two Rainsheets can be joined to form a shelter for 3 people.   Since two-man tents typically weigh 4-5 lbs., your weight savings would be enormous.