Bulk Values
Source Player Core pg. 234
Items can have a number to indicate their Bulk value, or they can be light (indicated by an L) or negligible (indicated by a —) for the purpose of determining Bulk. For instance, defiance series armor is 3 Bulk, a dueling sword is 1 Bulk, a knife or spell gem is light, and a credstick is negligible. Ten light items count as 1 Bulk, and you round down fractions (so 9 light items count as 0 Bulk, and 11 light items count as 1 Bulk). Items of negligible Bulk don’t count toward Bulk unless you try to carry vast numbers of them, as determined by the GM.