Took my Frontier X out for a test ,yesterdayTotal weight with Vapour peak ,ground sheet pegs ect in the bag came in at 16.6 Kg.It fits a Nash SS3 Wide with around 6 inches clearance at both ends .and plenty of room inside .Clipping the arms in is relatively straightforward , taking apart does make you feel like you may bend them , but i didnt, how long the boss will last clipping them in and out (wear and tear) ,who knows .All in all, id say well made and an excellent bivvy