The Tubus Airy the titan among all carriers. A lighter model would not be possible.

This carrier holds the world record for its carrying capacity to weight ratio. It can carry much more than its own weight of 0.5 lbs. Airy was the first carrier in the world made out of the very hard to process materialtitanium. Titanium is not only very light and high-tensile, it is also extremely resistant to atmospheric attacks. The AIRY is nearly indestructible.