How old is the player character in Pokémon Sword and Shield?

Excuse me, could you possibly enlighten me on the age of the player character in the popular video game series, Pokémon Sword and Shield? I've been quite intrigued by the game and its mechanics, but I've been unable to find a definitive answer to this particular question. I understand that the franchise often depicts young trainers embarking on their Pokémon journey, but I'm curious if there's any specific age range assigned to the protagonist in this particular installment. Thank you for your assistance.