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.
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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.