Gloucester flanker Ross Moriarty's spell with England's U20 side will help the player in his bid to make Wales' Rugby World Cup squad.
That is the word from his father Paul who represented Wales at the inaugural World Cup in 1987.
The 21-year-old has been included in Wales boss Warren Gatland's provisional squad for the senior World Cup after winning two Junior World Championships with England.
"It was fantastic for him," Paul told the BBC.
"He had so much support. To play in two junior World Cup finals and to win the both of them is a great achievement for him."
Moriarty is determined to follow in the footsteps of his father and uncle Richard who finished third with Wales at the 1987 World Cup held in New Zealand and Australia.
Gatland will trim his squad down to 31 players at the end of August and Paul knows his son will have to work hard to make the cut.
"To get to the squad in the first place is a great achievement and the whole family are proud of him, but he knows that this is just the start and the hard work begins," he added.
"He's got a couple of tough months ahead of him where he's got to prove himself and he's got to show Warren Gatland that he deserves a spot in that last 31."