Joe Launchbury insists England will have to be at their very best if they are to topple Argentina in their two-Test tour.
England will head to South America on the back of their morale-boosting 40-12 rout of the Barbarians at Twickenham.
They will warm-up for the Pumas with a clash against combined South America XV in Uruguay on Sunday.
And Launchbury, the QBE Player of the Series during the autumn internationals, knows England will have to raise their game - particularly up front.
"Argentina pride themselves on how they play upfront and the way the pack goes about their business," Launchbury said.
"They are certainly a team on the up. They put in some great performances through the Rugby Championship so we know the threat that they possess and we need to concentrate on what we can do and play to our maximum."
England coach Stuart Lancaster has named a largely inexperienced squad for the trip due to the British and Irish Lions tour and a number of players being rested.
However Launchbury believes the young guns can step up to the mark.
"A lot of the guys here have a great chance and a great opportunity to stake their claim," he said.
"A lot of the guys here are the in-form players in the Premiership and some of them are playing great for their clubs week in, week out.
"I suppose what Stuart wants everyone to do is come here and try to reproduce that in the white shirt."