Maybe you’re one of those fitness types who needs exactly 1 cup of broccoli, 200 grams of lean chicken, and 150 grams of yoghurt for lunch. Or maybe you take a bunch of supplements and you’d like a convenient way to measure and portion them all. Or maybe you just really like the idea of a minimalist lunch box. Either way, GoStak has you covered. They come in a bunch of different sizes, the bottoms interlock with the tops, and a handle fits on top. It’s pretty genius.