Parum Fortis: “Small but powerful,” this convenient foldable backpack with belt clip can save the day. The Sidekick fits in almost any mesh pocket and it is ready to unfold at any moment into the backpack it was meant to be. Small and practical, this little guy can be attached to your belt or to your backpack for later use. It has a main compartment (17 L) and unpadded shoulder straps so you can keep it simple. You can use it to carry your rations in the way up and bring it folded up and (conveniently) attached to your belt in the way down. Or attach it to your pack in the morning and use it to carry your jacket in the hot afternoon.