This guide is not medical advice. Stop use if significant pain, numbness, swelling, discoloration or circulation concerns occur.
A kit earns a buying guide when its listing raises real questions: which length class to select, what the four-ring range covers, and what the package actually contains. The Viper V7.0 EVO raises all three — and answers them in print, which is exactly why it can be guided through without inventing experience claims.
This is a specification-reading guide, not a wear review: every statement below comes from the published package and configuration data, and the gaps are named as gaps. The wider category context lives in how to choose a chastity cage.
What does the published package list include?
One cage body, four base rings at 38, 43, 48 and 52 mm, a lock with two keys, and a safety pin. Read that list as a fitting plan: the four rings step in 5 mm increments across the most common base-ring range, which lets you bracket your measurement inside one order instead of guessing a single size. The lock and two keys close the system; the safety pin is the listed spare for the locking stack.
What the list does not include is equally clear: no second cage body, no belt, no optional attachments. The kit is a single-cage, multi-ring package — the format this site recommends for first purchases and for ring-size settling, and the format to move beyond once your size is proven.
Which cage size must be selected?
The variant menu chooses color (Black or White) and cage length class: Nub, Nano, Small and Standard. The names are ordered classes within this product line, not cross-brand measurements — the internal-length millimeters behind each class belong to the product’s own size chart, and those are the numbers to compare against your measured usable length. Because each order ships one body, the class you select is the body you get; there is no try-all-four option in a single kit.
Selecting the class is therefore the one decision the four-ring set cannot make for you. If your measured length is uncertain, the honest sequence is: settle ring size with the kit’s included range on the class closest to your measurement, then — if the length proves wrong — you have learned which class to reorder rather than which brand to blame.
The Viper Chastity Cage V7.0 EVO
The kit this guide reads: Choose the Viper V7.0 EVO for a nylon-resin kit with four base rings. One selected cage, a lock with two keys and a safety pin are included, giving you a clear starting set without buying each ring separately. Select the cage size on the product page.
Which dimensions belong to the pictured version?
Product photos show one configuration — typically the Black Standard-class body with its ring set. Those pictures demonstrate finish, vent pattern and the general silhouette; they do not publish the Nub variant’s internal length or the White version’s differences (if any beyond color). Your dimensions come from the chart, not the render: usable internal length for your selected class, internal width at the narrowest point, and ring sizes as listed.
Treat the photo’s scale honestly too. A ring set photographed beside a Standard body can make the Nub look shorter than it is or the 38 mm ring look larger — dimensions are read in millimeters with arrows, never estimated from images. The chart-reading method is covered in the size-chart guide, and it applies to this product exactly as written there.
What should you check before ordering?
Four checks, in order. First, ring range: does 38–52 mm bracket your measured base-ring size? If your measurement sits below 38 or above 52, this kit cannot fit you regardless of its other merits. Second, length class: which of the four matches your measured usable length per the chart? Third, package confirmation: the listing still states the four rings, lock with two keys and safety pin for your selected variant. Fourth, care instructions: nylon resin has its own cleaning limits — confirm them from the product page rather than assuming.
Then order with the usual hygiene-window caution: unbox against the package list (the unboxing checklist covers the full sequence), test the lock off-body, and begin with short unlocked sessions. The kit’s job is to make that first month of fitting cheap and reversible; the specification says it can, and the specification is what you were promised.
Four rings, one selected body, lock with keys, safety pin — a complete kit stated in print. Verify the ring range covers you, choose the length class from the chart, and let the package list be the contract it is. What the listing states, you can rely on; what it leaves blank, you verify — and now you know which is which.
This guide includes promotional links to ChastityCage.co. To check the current listing yourself, view the Viper V7.0 EVO kit at ChastityCage.co.
