A chastity belt is a locking garment worn over the genitals. Most designs combine a band around the waist with a shield that passes between the legs, and a lock that stops the wearer touching their genitals or having sex until it is opened. Modern belts are adult products for consensual use; the medieval version is largely a myth.
What does "chastity belt" mean?
People use the phrase in three ways:
- A modern device. A belt that an adult agrees to lock on, often with a partner holding the key. Most of this page is about this meaning.
- A historical image. The knight who locks his wife into an iron belt before leaving for the Crusades. Historians treat this as legend, not record (see below).
- Shorthand for any chastity device. Many people say "chastity belt" when they mean a chastity cage, the smaller device that encloses only the penis. People who say "inverted chastity belt", for example, usually mean an inverted chastity cage.
The idea of a "belt of chastity" is far older than any locking device, but for most of history it was a symbol. In a 2009 review of a book-length study of the chastity belt, the historian Ruth Mazo Karras notes that the girdle of chastity in ancient literature "was a symbol of virginity only to be removed by the husband but which did not physically prevent intercourse", and that the Latin phrase cingulum castitatis in religious texts "refers to a symbol as well" (American Historical Review, 2009).
How does a chastity belt work?
A belt has three working parts:
- Waist band. A band of metal or rigid plastic that locks around the waist or hips and carries the rest of the belt.
- Shield. A plate that covers the genitals and runs between the legs to the back of the waist band, either directly or through a strap or cables that pass between the buttocks. Slots or holes in the shield let the wearer urinate.
- Lock. The lock holds the parts together. Whoever holds the key decides when the belt comes off.
Some belts have lined or padded edges where they touch the skin. Because the shield sits against the skin, a belt has to come off for proper washing and drying, and the wearer must be able to get it off quickly if anything goes wrong. That means keeping a key, or another way to open the lock, within the wearer's reach at all times, even when a partner holds the main key.
What are chastity belts used for today?
Modern belts are made and sold as adult products. Consenting adults use them:
- as part of a relationship agreement in which one partner holds the key, often called keyholding;
- for orgasm denial, where the point is to wait;
- as a symbol of commitment, or of a power-exchange (BDSM) dynamic;
- as a self-control aid, without a partner.
An agreement to wear a belt can be changed or ended at any time, and taking it off for safety must never depend on a partner's permission. For how couples set rules and limits, see consent and boundaries in chastity play and chastity belts in BDSM relationships.
Were chastity belts real in the Middle Ages?
There is no reliable evidence that they were used. The earliest known picture of one is in Konrad Kyeser's Bellifortis (1405), an illustrated book on war machinery. Albrecht Classen, the medievalist who wrote the study Karras reviewed, calls the drawing "a joke, nothing else" (History News Network, 2015), and Karras's review describes his reading of Kyeser and the other medieval texts as "persuasive".
The image of medieval husbands locking up their wives took hold in the 19th century, and Classen notes that the "medieval torture museums" founded at that time were "mostly supplied by modern (!) objects" (History News Network). The Science Museum in London says documentation connected with one of its iron belts claims it may date from the 1500s, "but more likely it was made in the 1800s" (Science Museum Group). Our history of the chastity belt sets out the evidence in detail.
Chastity belt vs chastity cage
| Chastity belt | Chastity cage | |
|---|---|---|
| What it covers | The genital area, under a shield | The penis, inside a tube or cage |
| What holds it on | A band around the waist or hips | A ring behind the testicles, around the base of the penis |
| Made for | Female and male anatomy | Male anatomy |
| What has to fit | Waist or hip size, the length between the legs, the shape of the shield | Ring size, and the length and shape of the cage |
| Where it touches the skin | Waist, groin creases, between the buttocks | Base of the penis, behind the testicles |
| Under clothes | More hardware to hide | Smaller and easier to hide |
A belt spreads its hold over the hips, while a cage is anchored by one ring. A belt avoids the ring, but it covers much more skin, which makes fitting and cleaning more work. For a fuller comparison, see chastity cage vs chastity belt; for the different cage designs, see types of chastity cages.
Male and female chastity belts
The main difference is the shield. On a female belt it lies over the vulva and is shaped to sit flat against the body. On a male belt it has to hold the penis, usually in a tube or cover built into the shield, and make room for the testicles.
- Male chastity belts: how they are built, how they compare with cages and what has to fit.
- Female chastity belts: design, fit and hygiene.
With either, the shield holds warmth and moisture against the skin. NHS advice on thrush, which affects both men and women, includes "dry properly after washing" and "do not wear tight underwear or tights" as ways to ease it and stop it coming back (NHS: thrush). A close-fitting shield works against both, so plan for the belt to come off for washing and drying.
Are chastity belts safe?
Nobody knows how safe long-term wear is, because it has not been studied. A 2026 expert-opinion article in The Journal of Sexual Medicine notes that male chastity devices "have not been evaluated in clinical or epidemiologic studies" (Wang and Raad, 2026). Belts have not been studied either: PubMed, the main index of medical research, lists no clinical studies of chastity belts.
The medical evidence that does exist comes mostly from case reports of rings and other objects trapped around the penis. A 2008 review calls this "a urologic emergency with potentially severe clinical consequences" (Silberstein et al., 2008), which matters for any belt with a ring or a tight tube. Skin is the other concern. Dermatologists explain that in skin folds such as the groin, sweat "cannot evaporate due to occlusion" and friction "results in chafing" (DermNet: intertrigo).
Take a belt off straight away if it causes pain, numbness, swelling, coldness or a colour change, and get urgent medical help if it will not come off. Sudden, severe pain in a testicle needs emergency care: go to an emergency department (A&E in the UK) or call your local emergency number (NHS: testicle pain). Our guide to chastity cage risks and long-term effects explains the evidence in more detail.
Frequently asked questions
Were chastity belts actually used in the Middle Ages?
There is no reliable evidence that they were. The earliest known drawing, from 1405, is read by historians as a joke, medieval stories that mention locked belts are satire, and many belts in museums were probably made in the 1800s.
Is a chastity belt the same as a chastity cage?
No, although the names are often mixed up. A belt locks around the waist and covers the genitals with a shield. A cage encloses only the penis and is held on by a ring behind the testicles.
What are chastity belts used for?
Today they are worn by consenting adults: as part of an agreement in which a partner holds the key, for orgasm denial, or as a symbol of commitment.
Can you go to the toilet wearing a chastity belt?
You can usually urinate through openings in the shield. Whether you can open your bowels without taking the belt off depends on the design of the rear strap or cables, so ask the maker. Keeping the covered skin clean is harder, and washing and drying it properly means taking the belt off.
Are chastity belts safe?
There are no studies of long-term wear, so no one can say how long is safe. Remove a belt at the first sign of pain, numbness, swelling, colour change or broken skin. Sudden, severe testicle pain needs emergency care at an emergency department (A&E in the UK).