Such a convenient storage container! BlenderBottle’s GoStaks are multi-sized jars that interlock in various combinations. They have a secure seal so that even liquids will not spill, and they’re made out of a durable, stain- and odor-resistant material. Perfect for holding vitamins, snacks, electrolyte/protein powders, etc. There’s even a removable carrying handle – just add a clip and you can easily attach it to your backpack so that a motivating snack is handy as you hike up that mountain!