A liquid-resistant protection for part of an extremity comprises a sleeve (1) of a waterproof polymer film, the sleeve (1) having an open end (2a). The liquid-resistant protection further comprises an adhesive layer (3) for sealing the sleeve (1) arranged on a section (3) of the outside of the sleeve (1) adjoining the open end (2a). A method of achieving a liquid-resistant protection around an extremity is demonstrated. A set of parts for forming a liquid-resistant protection for part of an extremity is furthermore demonstrated.