Girl rubbing herself with a towel after a swim

A rather faded colour slide of a girl rubbing herself dry with a towel after a swim. She is sitting next to another girl who is reading a newspaper, and a man who is dozing in a deckchair behind her. There is another empty deckchair in the group which suggests perhaps she is waiting for her companion who is still in the sea?

Taken in the mid to late 1950s.