Rust collared cardigan in alpaca wool and synthetic fibers. The main reason for the use of synthetic fibers in woolens is that they provide softness. Pure wool is very well known for being warm, but unfortunately, it can cause tingling or itching. When blended with synthetic fibers, the wool becomes softer and more supple, and the strength and stretch are increased. On the other hand, synthetic fibers increase the insulating power of wool and make it easier to care for. You don't have to wait for winter to wear it because it also warms up the cool evenings at the end of summer.

Ref: P162-ROUILLE