The phrase "irresistible combination" means that two or more things come together in a way that is so appealing or attractive that it is difficult to resist or say no to. Full definition
We've blended 2 varieties of our hand - selected, hand - sorted hay together to create a deliciously irresistible combination, making any small pet's day even better. (petco.com)
Her Sybil is an unusual but irresistible combination of warmth and tartness, of the determinedly upbeat and the haunted. (slate.com)
It's an irresistible combination that means now is the ideal time to welcome back one of the most successful shows in the history of contemporary television.» (businessinsider.com)