Yamatomichi Breathable Pad for Mini BackpackDesigned to be used with Yamatomichis Mini Backpack, this is a breathable back pad which replaces the lightweight pads which the bags are supplied with. Made from a cutting edge material known as C Core which we can only really describe as space age plastic webbingits a clever upgrade for those who want to raise the comfort levels during long treks. Comes with a support pad to maintain the shape and stability of the pack.