The 2 most popular ones, the KAC and Tango Down, are close to the same weight. The KAC weighs about 2.75 oz and the TD weights about 3.5 oz. The other popular VFG, the Dieter CQD, is much heavier because it's all aluminum. I weighed one I owned at one point but don't recall the exact weight. I vaguely remember it being aroud 7-8 oz.