 Collection condoms are made from silicone or polyurethane , as latex is somewhat harmful to sperm . Many men prefer collection condoms to masturbation , and some religions prohibit masturbation entirely . Also , compared with samples obtained from masturbation , semen samples from collection condoms have higher total sperm counts , sperm motility , and percentage of sperm with normal morphology . For this reason , they are believed to give more accurate results when used for semen analysis , and to improve the chances of pregnancy when used in procedures such as intracervical or intrauterine insemination . Adherents of religions that prohibit contraception , such as Catholicism , may use collection condoms with holes pricked in them . 
 Collection condoms are made from silicone or polyurethane , as latex <a href='drop_aux' title='1'><mark>is</mark></a>somewhat harmful to sperm . Many men prefer collection condoms to masturbation , and some religions prohibit masturbation entirely . Also , compared with samples obtained from masturbation , semen samples from collection condoms <a href='got' title='2'><mark>have</mark></a> higher total sperm counts , sperm motility , and percentage of sperm with normal morphology . For this reason , they are believed to give more accurate results when used for semen analysis , and to improve the chances of pregnancy when used in procedures such as intracervical or intrauterine insemination . Adherents of religions <a href='null_relcl' title='3'><mark>that</mark></a>prohibit contraception , such as Catholicism , may use collection condoms with holes pricked in them . 
Collection condoms r made from silicone or polyurethane , as latex somewhat harmful to sperm . Many men prefer collection condoms to masturbation , and some religions prohibit masturbation entirely . Also , compared with samples obtained from masturbation , semen samples from collection condoms got higher total sperm counts , sperm motility , and percentage of sperm wid normal morphology . For this reason , they are believed to give more accurate results when used for semen analysis , and to improve da chances of pregnancy when used in procedures such as intracervical or intrauterine insemination . Adherents of religions prohibit contraception , such as Catholicism , may use collection condoms with holes pricked in them .