The sizes with Jar after the weight come in a jar. The bulk box comes in one bulk bag in the box. All other sizes come in a FDA approved resealable poly nylon bags that keep you food fresh. When you buy the 1 lb. size you will receive two bags with 1 2 lb. of food in each. When you buy the 5 lb. size you will receive 10 bags with 1 2 lb. of food in each. This allows you to open them up as you need them instead of one big bag that will go stale.