BIGFOOT thread is sourced from UK world renowned company COATS. This is good quality thread unlike others sold in ebay. BIGFOOT BONDED POLYESTER THREAD HAS AN EXCELLENT UV RESISTANCE FOR APPLICATIONS EXPOSED TO MARINE WATER AND SUNLIGHT. UNIQUE BONDING TECHNOLOGY THAT SAFEGUARDS AGAINST PLY UNTWISTING IN ZIG-ZAG SEWING AND CAN SEW THROUGH MANY LAYERS OF HEAVILY FINISHED FABRIC (USING THE RIGHT SEWING MACHINE). DUAL LEVEL LUBRICATED FINISH FOR NEEDLE HEAT PROTECTION AND SMOOTH SEWING. EXCELLENT BLEACH, MILDEW AND ROT RESISTANCE. USED BY INDUSTRY FOR SAIL MAKING AND OTHER OUTDOOR AND MARINE APPLICATIONS .