FireLine is made of strong fibers braided together and fused, but some may not know that it can also be used as a superior beading thread, though it is somewhat more expensive than other beading threads. 

Beaders especially like FireLine because it is strong, resistant to abrasion, requires no conditioning, and does not stretch out, making it a particularly good beading thread for beginners.

FireLine Pros

Easy to thread onto a needl
A strong, durable beading thread
Excellent for use in off-loom weaving and for stringing small pearls and gemstone beads
Easy to undo tangles
Very difficult to rip or tear with a needle
A thread that does not require pre-stretching or conditioning
Not apt to stretch or break