Springbok Saracens pen new deals
Both players have been highly influential figures at Vicarage Road since their arrival in July last year. Brits, a dynamic ball-carrying hooker, was rewarded for his outstanding 2009-10 season by being named the Rugby Players' Association player of the year.
"This is a special place and I'm really enjoying life at the moment," said Brits.
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Hide Ad"We're competitive on the field and we're a trusted group of friends off the field.
"Saracens are a genuine family club and I'm very happy to be part of that."
Joubert also enjoyed a strong debut campaign in English club rugby and was shortlisted for Premiership player of the year. The No 8 has led Saracens during the injury-enforced absence of Steve Borthwick, including in last season's 33-27 Premiership final defeat by Leicester.
The lengths of the new contracts accepted by the players have not been disclosed by Saracens.