This pattern is available in three sizes:

Baby (24” x 30”) uses 2 skeins or 500yds
Child (32” x 40”) uses 4 skeins or 1000yds
Throw (48” x 60”) uses 8 skeins or 2000yds

The recommended yarn for this pattern is Juniper Moon Farm Cumulus, but any worsted weight yarn will work.