We know it has probably been a while since you finished sex ed in school, so here is a little refresher: To prevent pregnancy and sexually transmitted diseases, condoms are a must. As a barrier method of birth control that prevents sperm from entering the vagina, condoms can be up to 85 percent effective, according to Planned Parenthood. When used consistently and correctly, condoms are highly effective in preventing HIV, according to the Food and Drug Administration (FDA). They are also effective at preventing sexually transmitted diseases (STDs) such as gonorrhea and chlamydia that are spread through bodily fluids. When selecting a condom for yourself or helping your partner decide which one is best, it’s important to keep preference, size, and style in mind. Depending on which brand you choose, some offer ribbed experiences, while others provide an extra dose of lubrication for when you need it. According to the FDA, tests have shown that latex and polyurethane condoms (including the female condom) can prevent the passage of the HIV, hepatitis, and herpes viruses. But natural (lambskin) condoms may not do this. While most condoms in the market are made of latex, if you or your partner has an allergy, you can select polyurethane (made of plastic). Not sure where to start? Don’t worry — we’ve lined up the best options for couples:

Trojan Ultra-Ribbed Ecstasy

Trojan Charged Orgasmic Pleasure

See price on Walmart

myONE Perfect Fit

See price on ONE

SKYN Cocktail Club  

LifeStyles ZERO  

HANX  

See price on HANX 

Durex Avanti Bare Non-Latex  

See price on Jet.com