As a general rule, an item that weighs 5 to 10 pounds is 1 Bulk, an item weighing less than a few ounces is negligible, and anything in between is light. Particularly awkward or unwieldy items might have higher Bulk values. For example, a 10-foot pole isn’t heavy, but its length makes it difficult for you to move while you have one on your person, so its Bulk is 1. Items made for larger or smaller creatures have greater or lesser Bulk, as described in
Items of Different Sizes.