Fireline beading thread has an unbelievably high tensile strength and is made from polyethylene, one of the strongest fibers ever made. It is a favorite of many beaders who create intricate designs requiring multiple passes. It is durable and feels and works better than many other stringing materials. It does not stretch, it knots easily, and it is extremely flexible. Also shop the BeadSmith 100% Pure Beeswax and use it to condition your thread for bead stringing or sewing. It is easy to apply and will not create a mess!