We have used Patons Inca ( it is actually two balls) and a pom pom. This 14 ply lovely thick yarn, works up quick and has become one of our favourites.
It has some nice cable and a ridge detail.
The kit includes 2 balls of Inca a fluffy pom pom to match as well as our pattern that can be worked on two needles or in the round.
The needles size is 7mm, in either straight, circular or double pointed.