30% Cotton, 30% Viscose, 20% Acrylic, 20% Nylon

Description from Knitpicks.com:

A delightful combination of a tiny cotton bouclé twisted around a strand of a brightly colored viscose blend. The touch is quite soft and the fabric is very drapey. We’ve carried Twist with Shine (cotton/modal sport weight) and Sparkles (novelty ladder yarn) for some really fun effects.