SBIHC Socks, manufactured by SP - lightweight polyester variant.
 
Fabric:
100% polyester Heavyweight double-knit (classic Ultra socks)
Pro double-knit (Ultra-Plus socks)

Details:
3/4" straight hem at thigh
Elastic at ankle
Single knees
 
Available in three sizes:
 
	
Adult - 30 inches (76 cm)
	
Intermediate - 27 inches (68 cm)
	
Junior - 24 inches (60 cm)