What does SISU mean?This Finnish term means determination, bravery, guts, resilience, perseverance and hardiness. "The Finns have something they call SISU. It is a compound of bravado and bravery, of ferocity and tenacity, of the ability to keep fighting after most people would have quit, and to fight with the will to win. The Finns translate 'sisu' as 'the Finnish spirit,' but it is a much more than word than that."- New York Times SISU Begins Where Perseverance Ends. This SISU necklace is handmade, measures 3/4 inch and is made from aluminum. This necklace hangs from a solid 18" sterling silver or stainless steel chain. Handmade in Michigan's Upper Peninsula