All of the packages of bulk hair weigh the same: 4oz/110-114 grams. The longer the hair that you order, the less individual hairs you get per package. The shorter the hair, the more individual hairs you will receive.
Bulk/Loose hair is hair that is not attached to a weft. You will receive this hair in one pack containing two bundles held with a band tied around each bundle, about an inch from the top of the hair.