Holy Trainer V4 vs V5: Differences, Sizes, Price, and Which to Buy
The main difference between the Holy Trainer V4 and V5 is the locking mechanism. The V4 uses a key-operated lock, while the V5 features a Click & Lock mechanism that lets you lock it without a key. Both require a key to unlock.
At Lockd, the V4 is listed in five sizes, while the V5 is available in the Nub size. The V4 is the more practical option if you need a different size. If the Nub fits your requirements, choose between the two based on your preferred locking mechanism and budget.
Holy Trainer V4 vs V5 at a Glance
| Feature | Holy Trainer V4 | Holy Trainer V5 |
|---|---|---|
| Locking mechanism | Integrated key-operated lock | Click & Lock mechanism |
| Lock without a key | No | Yes |
| Unlock with a key | Yes | Yes |
| Material | Resin / bio-resin | Resin / bio-resin |
| Ring sizes included | 36, 40, 45, 50 mm | 36, 40, 45, 50 mm |
| Nub internal length | 49 mm (1.9 inches) | 49 mm (1.9 inches) |
| Nub internal diameter | 32 mm (1.25 inches) | 32 mm (1.25 inches) |
| Sizes available at Lockd | Nub, Nano, Small, Standard, Maxi | Nub |
| Listed price at Lockd | $39.99 | $49.99 |
Prices and availability can change. Confirm the specifications on the individual product page before ordering.
Before ordering, read our chastity cage measuring guide and use our chastity cage size calculator.
Back to top ↑Locking Mechanism: V4 vs V5
The locking mechanism is the most important difference between these two models.
Holy Trainer V4: Key-Operated Lock
The V4 uses an integrated lock rather than a conventional external padlock. Product reviews describe a locking pin or sleeve secured using the key. To lock the device, the key is used to engage the mechanism. A key is also required to unlock it.
This system suits buyers who prefer a traditional key-operated mechanism and do not need to lock the device without handling a key.
Holy Trainer V5: Click & Lock
The V5 introduces Holy Trainer's Click & Lock system, integrated into the ring. Instead of using a key to secure the lock, the wearer presses the mechanism shut. A key is still required to release it.
This makes the V5 useful in situations where the wearer wants to put on and lock the device independently, but leaves the keys with a partner or keyholder.
Can You Lock the V5 Without a Key?
Yes. The V5 can be locked by pressing the mechanism into place without using a key. However, keyless locking does not mean keyless unlocking. A key is still needed to release the lock.
Is the V5 More Secure Than the V4?
There is not enough comparative testing to conclude that one model is categorically more secure than the other. The documented distinction is the locking method: the V5 adds a push-to-lock mechanism, while the V4 uses a key-operated lock. Choose based on your preferred locking process rather than assuming the newer model offers superior security.
Back to top ↑Size Availability: V4 Offers More Choices
Size availability is a major consideration when choosing between the models at Lockd.
| Cage size | V4 | V5 |
|---|---|---|
| Nub | Available | Available |
| Nano | Available | Not currently listed |
| Small | Available | Not currently listed |
| Standard | Available | Not currently listed |
| Maxi | Available | Not currently listed |
If you need a cage longer than the Nub, the V4 is the practical choice among these two models in Lockd's current range. The V5's push-to-lock mechanism will not compensate for a cage that is too short, too long, or otherwise unsuitable for your anatomy.
Browse our Holy Trainer chastity cage collection to check current availability.
Back to top ↑Which Holy Trainer Should You Buy?
Your choice should depend on the size you need, your preferred locking mechanism, and whether the additional cost is worthwhile to you.
| Your priority | Recommended option |
|---|---|
| You need a size other than Nub | V4 |
| You want to lock the device without a key | V5 Nub |
| You want the lower-priced Nub option | V4 Nub |
| You prefer the Click & Lock mechanism | V5 Nub |
| You already own a V4 that fits well | Keep it |
| You're buying your first cage and aren't sure which size fits | Measure first and compare the available sizes |
Comparing the Holy Trainer with an open-bar cage instead? See Holy Trainer vs Cobra.
Back to top ↑Safety and Fit Considerations
Regardless of which model you choose, proper fit and safe use are essential.
- Check that the ring and cage do not cause painful pressure or pinching.
- Keep the keys accessible and know how to remove the device.
- Clean and dry the device according to the manufacturer's instructions.
- Remove it promptly if you experience pain, numbness, swelling, discoloration, or difficulty urinating. Seek urgent medical care if symptoms are severe or do not resolve.
Read our Safety & Use Guide before using either model.
Back to top ↑Frequently Asked Questions
Can you lock Holy Trainer V5 without a key?
Yes. You can press the V5's Click & Lock mechanism into place without using a key. A key is still needed to unlock it.
Does Holy Trainer V5 come in different sizes?
At Lockd, the V5 is currently listed in the Nub size. The V4 is listed in Nub, Nano, Small, Standard, and Maxi. Check the Holy Trainer collection for current availability.
Is the V5 more secure than the V4?
There is no comparative testing to say so. Both use an integrated lock and an enclosed resin tube. The V5 changes how the lock closes, not how much restraint you get.
Is the V5 worth the extra $10?
If you want the Click & Lock mechanism and the Nub fits you, the additional $10 may be worthwhile. If you prefer the V4's locking method or need another size, the V4 is the more practical option.
Final Verdict: Holy Trainer V4 or V5?
The Holy Trainer V4 and V5 suit different preferences. Choose the V4 for more size options and a lower listed price. Choose the V5 Nub if its dimensions suit you and you prefer locking the device without a key.
Neither model is automatically the better choice for everyone. Start with the fit you need, compare the locking mechanisms, and pay for the features you will actually use.
About the Author — Shoana Miller, Lockd Editorial Team
Shoana Miller is a certified sex educator and BDSM lifestyle coach with over 10 years of experience in sexual wellness and intimate product reviews. Holding a Master's in Human Sexuality, she has contributed to leading publications on chastity play, power dynamics, and relationship enhancement. Follow her on LinkedIn.
