A 45 mm base ring and a 45 mm cage width describe different parts. Start with the label, follow the measurement arrow, then match the number to the size or option you plan to choose. A number without its location is not enough to choose a size.
What Do the Numbers on a Chastity Cage Size Chart Mean?
This table uses teaching examples, not the specifications of one product. “Internal” describes available space; an outside measurement can include material thickness.
Swipe the table sideways to see all three columns.
| Measurement | Example | Meaning |
|---|---|---|
| Base Ring Inner Diameter | 45 mm | Inside diameter of the base ring |
| Cage Internal Width | 35 mm | Available internal width |
| Usable Cage Length | 50 mm | Available internal length |
| Ring Options | 42 / 45 / 48 / 52 mm | Available ring sizes or options; check what the set includes |
Keep comparisons in one unit. 1 inch = 25.4 mm: divide millimeters by 25.4 for inches, or multiply inches by 25.4 for millimeters. For example, 50 mm is about 1.97 inches. Use the original millimeter value when an image gives a loosely rounded inch equivalent; the millimeters and inches guide covers further conversions.
Base Ring Size vs. Cage Length and Width
Base ring diameter crosses the ring opening from one inner edge to the other. Cage internal width crosses the space inside the cage body. A chart may instead show the body’s outside width, so look for “inner,” “internal,” or arrows that clearly stop at the inside surfaces.
Usable cage length runs through the available internal space. “Cage length” alone may be an external dimension; “total length” may include a ring, plate, or lock housing. Neither label automatically tells you the usable length.
For flat, negative, and inverted designs, check internal depth: the space from the opening to the inside end. An outside measurement in a side-view image may not show this. Use the guide to inverted cage depth when needed.
For a circle, circumference ÷ π = diameter: 141 mm ÷ 3.14 ≈ 44.9 mm. This is a mathematical conversion, not a guarantee that a 45 mm ring will fit. Ring shape, the product’s construction, and how it feels in use also matter.
Metal Inverted Chastity Cage Stainless Steel Negative Chastity Device
This stainless-steel model separates “Cage with Arc Ring” from “Cage with Round Ring,” then offers 40, 45, 50, or 55 mm ring sizes. Choose both the ring shape and its size. Two rings labelled 45 mm can still have different shapes.
Compare Ring Options →How to Read a Real Product Size Chart
The diagram below shows the resin model’s cage body, not its base rings. The four separate base rings in this set are 42 / 45 / 48 / 52 mm.
- Read the cage measurements. In the front view, 22 mm marks the smaller section and 45 mm spans the outside of the body. The small front slot is marked 6 mm wide and 18 mm high. None of these numbers is a base-ring size.
- Check what is still missing. The 22 mm arrow is not clearly labelled internal width, and the 35 mm side-view arrow is not labelled usable internal depth. Ask for those measurements if you need them to choose a size.
- Choose the cage color. Under “Cage Color,” choose Black, Pink, or White. Each option says “with 4 Base Rings,” so you choose the color here, not a single ring diameter.
- Choose the strap separately. Under “Strap Color,” choose “NO Strap” or a Black, Pink, or White Strap. Check both the cage color and strap choice before adding the set to your cart.
Flat Inverted Chastity Cage with 4 Base Rings and Adjustable Strap
This resin model includes four base rings: 42, 45, 48, and 52 mm. Choose the cage color separately from the strap option.
Check Sizes →What Do Ring Options and Package Contents Mean?
A list of sizes does not, by itself, state the quantity supplied. Check the exact product and the option you select, then read what the package includes.
ABS Small Shell Chastity Cage Set with 4 Rings – Pink / Black / White
The ABS shell set includes 40, 43, 46, and 50 mm rings. Having those sizes in one set lets you compare the supplied openings rather than choose a single ring at checkout. Color and optional nylon strap remain separate choices.
View Product →What If a Measurement Is Missing or Confusing?
A blank cell means the chart does not supply that information; it does not mean a size or option is unavailable. Check the product’s option menus. If the text and diagram disagree, ask which applies to the selected version rather than assuming either is correct. For other labels, see how to read product specifications.
Before You Order: A Quick Size Check
- Match every number to its part and arrow endpoints.
- Separate internal space from outside dimensions.
- Use one unit and check the exact size or option you selected.
- Confirm supplied rings and optional accessories.
- Resolve missing dimensions before choosing.
Use the Size Guide as your reference. For taking your own measurements, follow the measuring guide, then compare the documented dimensions of inverted cage configurations.
Frequently Asked Questions
What if there are photos but no size chart?
Use explicitly stated specifications. Do not estimate dimensions from a photograph; perspective and scaling can mislead.
Should I allow for manufacturing tolerance?
Use a tolerance only where the listing states one. Do not assume a shop-wide allowance or treat an unstated dimension as exact.
Can I compare charts from different shops?
Yes, when units, measured parts, and endpoints match. Similar labels alone are not enough for a like-for-like comparison.