The actor launched the brand in Goa Friday, and said that the location has always been lucky for him.
"I have shot for many films in Goa. I love Goa and I feel Goa has always been lucky for me. I hope it is lucky for the Sertex association as well" Ajay told reporters.
The actor, who will be seen in upcoming action film "Action Jackson", added that he was very satisfied with the inner wear after trying it.
"I really liked the brand. I tried the inner wear and it's very good and comfortable ... I also liked the way it (the commercial) has been shot with some humour," said Ajay.
