Superior Threads Polyyarn Blue Textured Polyester Serger Thread. 

Polyarn is a textured (DTY) "woollie-like" polyester thread which is a replacement for similar nylon threads. 

Designed specifically for serger sewing, Polyarn has excellent stretch and doesn't yellow or go brittle over time like nylon threads.  

100 Percent Polyester. 

Tex 26. 

1,000 yard mini cone. 

Color: Navy Blue. 

Lot. Col. SW29.    

PY-290