cert2

PHYSICAL TESTING  Every leather is validated against ISO and ASTM methods before bulk production. Strength, flex and adhesion are tested on the finished article, so the numbers reflect real use in bags, belts and straps.Tensile strength (ISO 3376), tear load (ISO 3377) and flexing endurance (ISO 5402-1) confirm the hide carries load without cracking. Color fastness to rubbing (ISO 11640), light (ISO 105-B02) and perspiration (ISO 11641) is rated on the grey scale, with finish adhesion (ISO 11644) guarding against peeling in daily wear.