This is "THE" option for the travellers, DIY and the ones who don't want to spend a lot money for all the bladders for every kite they have. It's a kind of universal solution, which consists of bladder eg. "bladder blank" and the serie of adhesive, stick-on or self-stick kite valves. When needed you stick them to the right position on the bladder blank, to copy your faulty or damaged original bladder. By that the one can use over-sized bladder and stick the valves when needed, having less weighted, "one-bladder" and on-site solution for more than just one kite!