The 005 is norda's race shoe: a 29 mm heel, a 7 mm drop and 4 mm lugs of Vibram Megagrip Elite, the grippiest compound the brand has put on a sole, over a Dyneema upper that weighs almost nothing.
It suits you if you race on trails and want something quick that is not also fragile. At 214 g in a US M 8.5 it is among the lightest trail shoes you can buy with grip this serious, and it stays stable enough to trust on a technical descent late in a race.
It is not an everyday trainer. A race compound wears faster than a normal outsole, and the fit is snug and unpadded in a way that suits an hour of racing more than an easy three.