Don't let the size of an extra small fool you. You'll be surprised about how much bud you can fit in here. In general we stick about an eigth of bud in an extra small stash jar, but you may able to get more than that if your buds are dense. Pop-tops best quality is their balance of air tightness and ease of opening and closing. You know these jars are keeping your nugs fresh when you hear the pop as you open the lid.