Alpaca felts... Silk Garden Felts ... I have made two bags from silk garden ... the IRO should felt... If I am making something felted but too lazy to swatch and felt I just knit it at a tighter gauge ... then I can either felt it alot to get it where I want it or felt it just a little if it felts really fast

I felt wool sweaters from Good Will and as long as it is at least 75% wool it will felt some ... the MAIN THING to remember anytime you are felting anything is that it will shrink MUCH MORE in length than in width.... the "thickness" of the felting will be consistant but the size (shrinkage) will be more in length .. did I say, it will get much shorter
