Dr.Tuba is authorized by many known kite brands. Our aftermarket replacement bladders are custom made in our factory, with the premium German TPU, all made in EU. It is UV stable and it won't degrade even in longer periods of time.
We spent a lot of time in searching the product which has great elongation and that is it still tough. With our 90 micron TPU our bladders are approx. 10%-20% lighter than the ones installed in the kite and have best weight to toughness ratio compared to competition. It is not un-common that they survive blowouts too!