Barnaby sent vegan boots to mark his 50th

What do you give an acting prime minister who loves his RM Williams? If you're PETA, its vegan 'leather' boots.

The animal activist group has sent National Party Leader Barnaby Joyce a pair of the boots to mark his upcoming 50th birthday.

"We wish you the happiest of birthdays, content in the knowledge that nobody had to be killed for your footwear," PETA wrote in his birthday card, released on Wednesday.

PETA has sent gifts to MPs before.

Liberal senator James McGrath recently got a vegan sausage pack and Prime Minister Malcolm Turnbull has been the recipient of a vegan 'leather' jacket.

Most vegan, or faux, leather is made from non-animal synthetic materials like PVC.

British designer Stella McCartney has a long standing line of vegan footwear, much of which are made out of polyurethane and polyester.

Mr Joyce turns 50 on April 17.