The campaign is recruiting knitters across the UK to create 1.6m hats to adorn innocent smoothie bottles.
For each hat-wearing smoothie sold, Age UK gets 25p to help older people.
Gary Hardley, head of community activities at Age UK West Sussex said: “It’s such a fun campaign to get behind and it does so much to help older people in our area.
“Whether you are a knitting ninja, purling pro, crochet connoisseur or just keen to have a go it’s time to get wild about wool and join the Big Knit.”
To find out more visit: www.ageuk.org.uk/westsussex or contact your nearest centre.
Participating centres are Crawley, Littlehampton, Burgess Hill and Haywards Heath.