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The condom is one of the most former means of contraception. His use, that goes back up to the antique, crossed the centuries. Since the XIXe, the sap of rubber tree, that serves to the manufacture of rubber, replaced the intestines of animals used before. At the end the XXe century, the condom falls little by little in obsolescence with the birth of the oral contraception. It is the apparition of the AIDS that puts back it to the taste of the day as only efficient rampart against the transmission of the virus during the sexual intercourse. In 1997, 102 millions of condoms have been sold in the hexagon. In the pharmacies, the big surfaces or the sex shops, different models are available to adapt to the needs of each: to choose his length, his width and his thickness to feel at ease. The length can vary from 170 to 208 mm and the width of 51 to 56 mm. It is important to choose a model adapted to the dimension of the penis of the masculine partner that is going to carry it. If a too narrow condom will be uncomfortable, against taking a too big size in relation to his/her sex is advised on the contrary, positively. The condom risks to slip of the verge during the sexual intercourse or to break themselves. The thickness also varies from a model to the other. More he is thin, more the sensations for the partners increase in precision without risking a rip of the latex. Some manufacturers also propose some condoms to the texture reinforced for the anal reports or with reliefs to procure more pleasure. ..Attention to the manipulations! All these variants of shape don't have any influence on the risks of ruptures that are the consequence of bad manipulations. The obligatory norms concerning the resistance of the condoms don't vary according to the models. Whatever is the size or the thickness, they must pass with success the same tests to be ratified. He doesn't serve to anything therefore to put two condoms for an anal penetration. On the contrary, it is dangerous. The rubbing of the two condoms encouraging the risks of ruptures. The latex doesn't like the heat that can modify his/her structure. To let a box of condoms right in the sun is therefore greatly advised against. In the same way, the ageing is damaging to the quality of the condom. Of dates limits of use appear on the packings, respect them imperatively. The conditions of storage can also alter his efficiency. A condom that drags since days or weeks in the bottom of a pocket or a bag must be thrown. Of the multiple foldings, contact repeated with pieces of currency, of the keys or all other object can pierce the packing and can provoke some invisible micros rips of the latex to the naked eye. ..How to choose his/her condoms? Since 1998, an European norm is obligatory for the set of the condoms sold in Europe. She is recognizable by the two EC letters affixed on the packing. The norm French NF, until there obligatory, became optional. She is let to the appreciation of the manufacturers that decides or no to ask for it. More rigorous on the controls of quality that the European norm, she brings a supplement of security for the consumers. It is therefore preferable to choose the marks that subscribed to this gait. Outside of Europe, every country is free to fix or no a norm of manufacture of the condoms and to define the modes of it. In case of abroad journey, the surest is to carry away with oneself his favorite mark in the NF norm while respecting the precautions of storage well.
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