Last month the group of 13 men, who are all part of families with children who have life-limiting conditions, climbed five UK mountains in 55 hours.
The men started at Ben Nevis before going on to scale Scafell Pike, Snowdon, Cadair Idris and Pen y Fan.
Tŷ Hafan runs community programmes and hospice-based care which helps families spend what time they have with their children in the best possible way.
Bunting became involved when its press officer and photographer Paul Fears announced he was taking part in the challenge.
Fears and his family have received years of support from Tŷ Hafan following the diagnosis of his eldest son Greg with a life-limiting condition.
Simon Ayling, Bunting managing director, said: “Paul talked to us about the challenge and explained that this group of Dads just wanted to do something to promote Tŷ Hafan and thank the staff and care team.
“Walking up five mountains in 55 hours was considered to be tough enough to be a real challenge but is nothing compared to the daily challenges faced by the families and children who are supported by Tŷ Hafan.”
Donations for the Ty Hafan #5in55 Mountain Challenge can be made on their Just Giving site.