The big Swiss cheese of all things tubeless, Eclipse have now released the World's Lightest Inner Tubes.
Manufactured from completely new materials, Eclipse inner tubes are not only lighter than anything else on the market (a road tube is just 29grams!) but they also offer massively improved puncture resistance over conventional tubes too. Weight savings can be as much as ⅓ lb off a pair of road wheels, ½ lb+ on XC and AM rigs, and as much as 1½ lbs off your DH sled. These new tubes are a fraction of the weight of everything else out there, and most importantly, it's rotating weight that you are shedding so the weight savings will be immediately apparent. The word 'light' doesn't even do them justice.
However, if tubes are 'sooo last year' for you then fear not, Eclipse also offer an incredible tubeless conversion system, it's super easy to install and is available as a complete package to convert your traditional wheels, all the way down to individual valve adaptors and everything in-between.