Robert Irwin was seen putting himself on display without any strings attached.

The 21-year-old, who is the son of late Crocodile Hunter Steve Irwin, chose to strip down to his briefs in a series of new ads for a leading Australian underwear brand called Bonds.

Robert went shirtless in this very daring photoshoot that bared his biceps and six-pack abs in nothing but pairs of various toned boxers.

He posed with a series of snakes and other venomous spiders for Bonds’ campaign that was titled ‘Made for Down Under’ that debuted on Wednesday, ahead of their launch in the US.

Despite being famous for his good-guy image, the young conservationist shared how he didn’t hesitate when asked to appear in those ads.

For him, it was an immediate yes and a great opportunity to put his body on display. As expected, his female fans went wild and were impressed to see a naughty side to him.

Robert made the runway debut in the past year and explained how he’s trying to do plenty of exciting and random things. At this point in his life, he’s a little nervous to experiment, but the star says nothing good ever came from comfort zones.