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The Karate gear could be like the Ranger gear, but suited towards combat.
The headband could put up the martial belief, and the body and lower could affect Unarmed Fighting and STR. Sandals could be AGI based.
Maybe have handwraps that occupy both the glove and weapon slots so you can't use weapons, these would also put up STR too, so you can't use swords with them on.
Maybe this isn't following along the Norse theme, but neither are coinpresses or the Ranger gear, from what I can deduce.
Would need silk, linen and string (maybe yarn/silk thread exclusive) to create the base clothes, and 1 silk cloth to create the headband.
Any other suggestions for this would be appreciated ;D
Edit: Oh, and that stick thing is a quarterstaff,