Are you at work so you can't look? Anyway here is the text for the materials.
[MC] Classic Elite Lush [50% Wool, 50% Angora; 124 yd per skein]; color: 4420; 1 skein
1 US #5/3.75mm circular needle, 12"
24 sts/32 rows = 4" in stockinette stitch[/b]
So based on this it takes one skein. You can easily sub another yarn as long as you have the same gauge. The recommended yarn is 50% wool so it's probably pretty warm though.