yeah, but if you buy a sack you should always weigh out of bag, or if u dont want residue on ur scale, just rip off the zip part of the bag because it ways alot.... my freind bought an ounce, and he weiged it in bag, and the bag was a big hefty with a easy zip lock, and the bag weighed 3.6.... and the ounce weighed out to 28.4 in bag