National standard for the size of general medium-sized condoms: the diameter of medium-sized (standard) condoms is 33mm, and the width is 52mm. Large condoms are 35mm in diameter and 54-56mm； in diameter; In width; The small condom has a diameter of 3 1mm and a width of 49 mm. The diameter and width of the oversize size are reduced by 2mm.
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20 12 12, scientists developed a female condom that can dissolve automatically in the body, which can effectively prevent contraception and sexual diseases.
This condom is a soft, transparent and durable sheath, made of polyurethane, with a length of about17cm, a thickness of 0.42-0.53mm and a maximum diameter of 7.8cm.. It can effectively prevent the spread of sexually transmitted diseases (including AIDS) while contraception. Compared with male condoms, it can prevent the spread of germs more effectively.
Based on the above advantages, condoms break the male "patent". In 20 14, a female safety condom specially designed and produced for women was officially unveiled in Chengdu. It is said that the condom has filled the gap in this field in the domestic market and successfully passed the acceptance of the Ministry of Health and provincial experts.