My Size Mix condoms are 57 mm wide and come in a pack of 28. Instructions for use My Size Mix condoms are 57 mm wide and come in a pack of 28. They are used as a contraceptive and to prevent sexually transmitted infections during sexual intercourse. They should be placed on the erect penis before penetration and discarded after use. Who is it for? My Size Mix 57mm condoms are indicated for people who require a condom size of that diameter. Pharmaceutical advice At farmaciasdirect we recommend that you read the instructions before using this product, especially if you suffer from any condition or allergy to any of its components. If you have any questions, you can contact us through the pharmacy advice service available on our website so that one of our experts can advise you as best as possible.