Shop Australian designer pieces featuring the world's strongest denim in our Saint Unbreakable sale for him. Saints Unbreakable Denim is woven with a unique double warp beam, which allows them to weave the world's strongest fibre, Dyneemas(R) UHMWPE. The result? A denim with 3600 torsional strength and motorcycle-tested impact. This type of protection is normally reserved for heavy leathers or thick double-layer solutions that line denim with a second or third layer of protective material. Saint has reached this with a lightweight and breathable single layer denim.