The boxes are made of sturdy plastic, and very resilient. Some clever ideas make it the ideal storage solution: via lateral straps the boxes can be connected to each other, the connection is easy to produce (after one "getting to know"), but still stable. The lid closes reliably, is nevertheless easy to open. Through a clever geometric arrangement of the storage bays AAA and AA batteries can each be firmly stowed without rattling. The colors are a matter of taste, I find them okay. Even the packaging is equipped with a nice idea: It's a reclosable, ziplock bag similar!
