Easy

Two balls of Roma for the cover.
One ball of Debbie Bliss Blue Faced Leicester Aran for the pompoms.

I-cord is used for the tie.

From the mag:

This hot-water-bottle cover works up quickly in the round in duck-egg-blue Roma, a chunky wool/alpaca blend. It boasts a ribbed neck and extra large pompoms worked in pink Blue Faced Leicester Aran.