The pattern said use cotton and a 3mm crochet hook. I used a 4mm crochet hook and white/silver crimpy DK wool so mine looks totally different than it is supposed to look like.
We already had the two grey chairs so brought the two blue fold up chairs and a table instead of the fold up one with stools attached. We are hoping this will be more versatile than only having two lounging chairs and two people sitting on the stools attached to the table. When it rains we bring the tv and put it on the little table in the awning so this will be better on rainy days as we all have a lounging chair now!