On the weight of the Soba handlebar, mine is a 46cm and does not feel any different than my ITM Pro260, which is purported to weigh 260g. Although I don't have a scale to verify its weight, I am sure my ITM does not weigh 260g since their supposedly lighter "215" model weighed ~250g when I weighed a few copies many years ago. Rivendell did weigh the Soba handlebar when it was first introduced, and they're officially sub-300g.

Regardless of their weight, the Nitto Soba/Noodle bars are quite fantastic in feel and simply exquisite in looks. For my non-racing bicycles, they are the choice.