This the first time the brand has engaged a creative agency.
The agency has been briefed to drive brand awareness by creating content for the retailers’ channels, as well as building customer engagement.
Becky Brock, Snow + Rock group marketing director, said: "We chose 3 Monkeys because it unlocked insights to our audiences that provided strong, clear creative routes.
"We are confident we have found the right partner to help us further build the brand identities and that the agency’s expertise will raise our profile and drive existing customers to engage more, while turning the heads of new customers as well."
Anna Speight, director of consumer and brand at 3 Monkeys, said it would be "creating passion-led content that will spark conversations and capture imaginations".