The King's love of tweed made headlines in recent years, after he spoke of wearing the same coat for 40 years.
Now the passionate dog lover has created a pet-friendly clothing line, which has just launched at the Sandringham Estate shop.
Passionate about pets
King Charles has always been open about his love of pets, with dogs holding a special place in his heart.
In February 2017 he rescued two Jack Russells called Beth and Bluebell. When Beth sadly passed away last year, Queen Camilla adopted a puppy named Moley and King Charles was gifted a Lagotto Romagnolo named Snuff.
Happy Hounds
The tweet coats are part of the Happy Hound range, which includes a tweed bandana and a tweed treat pouch.
Branded "perfect for frosty winter walks", the coats come in many different sizes and are machine washable. Prices range from £39.99 to £49.99.
Owners can also buy dog treats for £4.99, made with venison from the Sandringham Estate.