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Vac-U-Lock Universal Strap-On Plug By Doc Johnson - Strap On Sextoys
Vac-U-Lock Universal Strap-On Plug By Doc Johnson - Strap On Sextoys
Vac-U-Lock Universal Strap-On Plug By Doc Johnson - Strap On Sextoys

Vac-U-Lock Universal Strap-On Plug By Doc Johnson

$34.99
$34.99

Doc Johnson Vac-U-Lock universal strap-on plug with modular attachment system for harness play

Key Features:

Universal dildo attachment system

60-inch adjustable nylon strap

Ergonomically curved base design

Quick-change Vac-U-Lock mechanism

Accommodates multiple body types

Vendor: Doc Johnson
SKU: ACC-112-NOATTRIBUTES-SHOP-NONE-46056
Availability: Out Of Stock
Product type: Strap On Sextoys
Please hurry! Only 0 left in stock

Finding a harness that fits your body and lets you switch toys mid-scene is rare. This universal strap-on plug solves both problems with a 60-inch adjustable nylon strap and Vac-U-Lock compatibility, so you can change attachments instantly without removing the harness.

At a glance
  • Strap length: 60 inches, adjusts from 24 to 54-inch waist
  • Material: Phthalate-free nylon with padded synthetic base
  • Attachment system: Vac-U-Lock compatible for quick toy changes
  • Base design: Curved and padded for comfort during extended wear
  • Power: Mechanical—no battery needed
  • Includes: Harness, instruction manual, storage bag
🚚 Plain, discreet packaging🔒 Discreet billing↩︎ Hygiene-conscious returns policy

What it is

This universal strap-on plug is a harness system built for flexibility and comfort. Doc Johnson engineered it around the Vac-U-Lock mechanism, a proprietary attachment system that lets you clip different dildos onto the base without unbuckling the strap. The 60-inch adjustable nylon strap wraps around your waist and secures with a buckle, fitting bodies from 24 to 54 inches around. A curved, padded base sits against your body and prevents chafing during longer scenes.

What sets this harness apart is speed and adaptability. You can switch between three different dildos in seconds, keeping your partner guessing or responding to what they need in the moment. See the full BDSM Australia range of Strap-On-Me compatible harnesses and attachments.

Key features

  • Universal Vac-U-Lock compatibility: Attach any Vac-U-Lock dildo without removing the harness or adjusting fit.
  • Adjustable 60-inch strap: Nylon webbing accommodates diverse body types and waist sizes securely.
  • Curved padded base: Ergonomic design prevents discomfort and chafing during extended wear or intense play.
  • Quick-release mechanism: Detach and reattach toys in seconds, keeping scenes fluid and responsive.
  • Body-safe materials: Phthalate-free nylon and synthetic base ensure safe contact with skin.

Specifications

  • Total strap length: 60 inches; adjustable waist range 24 to 54 inches
  • Strap width: 1.5 inches
  • Material: High-quality nylon webbing with reinforced stitching and body-safe synthetic base
  • Base design: Curved and padded for ergonomic support
  • Power source: Mechanical attachment—no batteries required
  • Compatibility: Universal Vac-U-Lock system for all compatible dildos
  • Box contents: One harness, instruction manual, storage bag

How to use a strap on sextoy

Start by adjusting the nylon strap to your waist size. Wrap it around your body and secure the buckle so it fits snugly but comfortably—you should be able to fit one finger under the strap. Align your chosen Vac-U-Lock dildo with the curved base and press firmly until you hear or feel it click into place. Position the padded base against your body for maximum comfort and check that the attachment is secure before beginning.

During play, you can switch dildos by pressing the release button and removing the current attachment, then clicking a new one into place. This works mid-scene without interrupting momentum or requiring you to remove the harness. Explore different positions—waist, thigh, or even chest mounting—to discover what works best for your body and your partner's. Check out the Sensuva On collection for compatible attachments that expand your options.

Always use a water-based lubricant with this harness, clean the base and any attachment thoroughly before and after use, and start with a smaller dildo if you're new to penetration to allow your body to adjust gradually. Safety first. This information is general in nature only and is not medical or professional advice; it does not account for your individual circumstances. Discontinue use immediately if you experience pain, numbness, discolouration, irritation or discomfort, and seek advice from a qualified medical professional if you have a relevant health condition or if symptoms persist.

Care and storage

Wash the nylon strap and padded base with mild antibacterial soap and warm water after each use. Air dry completely before storing to prevent mildew. Keep it in the included storage bag away from direct sunlight and heat. Check the stitching and attachment points regularly for signs of wear, and replace the harness if seams split or the base cracks.

Learn more

Understanding harness fit and toy compatibility helps you get the most from this system. Read more about preparation and technique in our guide, An Educational Primer On Pet Play. Proper maintenance also extends the life of your gear and keeps it safe for repeated use.

Mistress Athena's training notes

This Vac-U-Lock plug has become essential in my sessions. Its adaptability lets me maintain control while keeping my submissive uncertain—I can switch attachments mid-scene without breaking rhythm, forcing them to stay present and attentive. The quick-release mechanism means I never lose momentum, and that unpredictability deepens their focus on my commands.

My most effective technique involves gradually increasing attachment size as the scene progresses. I observe their response carefully, using the universal system to push boundaries at precisely the right pace. Sometimes I'll tease with a smaller dildo, then switch to something more challenging. This keeps them psychologically off-balance while building intensity.

The curved, padded base matters more than most users realize. Comfort during extended scenes allows me to maintain control longer, and a submissive who isn't distracted by discomfort is a submissive fully focused on their service. The adjustable strap fits all my regular partners, so I don't need multiple harnesses for different body types.

See this and similar tools in action across my 300+ training videos on the BDSM Australia channel.

How it compares

Feature Vac-U-Lock Universal Strap-On Plug Standard Fixed Harness Leather Bondage Harness
Toy attachment Quick Vac-U-Lock system, swap in seconds Single dildo glued or bolted in place Rings or pockets for various sizes
Material Nylon webbing and synthetic base Silicone or TPE Leather with metal hardware
Fit range 24 to 54-inch waist, fully adjustable Fixed sizes, limited customization Adjustable but bulkier
Best for Quick scene changes and versatility Single-toy consistency Aesthetic power exchange and durability

Why you'll reach for it

Browse the Vac-U-Lock Universal Strap-On Plug at BDSM Australia when you want a harness that adapts to your body and your scene. This system gives you the freedom to switch toys without losing control or comfort, making it ideal for partners who want variety and responsiveness in their play. Order today and discover how quick-change versatility transforms your intimate moments. Australia's BDSM Specialists for Over 15 Years.

BDSM Australia ships with Australia Post. We ship from Sydney.

All in-stock orders placed before 12pm AEST (Sydney Time) on business days are generally processed on the same day. Packages are usually received 1-6 business days after shipping, but may subject to any postage carrier related delays beyond our control.

Free standard shipping on orders shipped within Australia above $200. For orders below $200 standard shipping within Australia is $12.95 and will be added at checkout.

Orders addressed to P.O box, G.P.O box or Parcel Collect will be handled by Australia Post. Extra time should be allocated for these orders.

Shipping Transit Times (Including Free Shipping)

Shipping time refers to the estimated time that it will take to deliver your order after it’s ready to ship (Please note this does not include time to process your order). Shipping time does not commence after your order is put through but begins the moment your order has been processed and is ready to dispatch via the our freight carrier..

1. Major City & Metro Areas (within Australia)

All in stock orders are generally processed on the same day the order was placed on business days for orders received before 12pm. Generally, orders are processed and shipped the same day or next business day.

Orders are typically received 1-6 business days after shipping. For larger packages please allow an extra 1-2 business days for delivery.

If no one is available at your delivery address to accept your order a second delivery may be scheduled or you will be notified that your order can be collected from the nearest depot location.

2. Rural Areas (within Australia)

All orders are generally processed on the same day the order was placed on business days before 12pm.

Generally, orders are processed and shipped the same day or next Business day.

Packages below 2kg are usually received 3-6 business days after shipping. For larger packages please allow an extra 1-2 business days for delivery.

If no one is available at your delivery address to accept your order a second delivery may be scheduled or you will be notified that your order can be collected from the local Australia Post depot.

International Shipping

The price for international shipping is AU$12.95 for orders equal to or below 0.399kg (399grams), and AU$22.95 for orders with a total weight equal to or above 0.4kg (400 grams).

All in-stock orders placed before 12pm AEST (Sydney Time) on business days are generally processed on the same day. Packages are usually received 6-30 business days after shipping. 

If no one is available at your delivery address to accept your order a second delivery may be scheduled or you will be notified that your order can be collected from your nearest delivery depot.

Please note in regards to all orders

– These expected delivery dates/times are based on carrier shipping practices, your destination, and the items in your order.
– Expected delivery dates are estimates. Orders can be delayed due to fraud verification or the time of the order being placed. Items that are not regularly stocked cannot be held to the expected delivery dates.
– Orders may be delivered in separate shipments.
– The order cut off times are based on normal Business Hours and exclude weekends and Holidays: Monday – Friday 12 pm
– When your order ships you will receive an email from us with a link to track your order.  If you receive your tracking number before 6 pm (AEST) it may not be updated on the Carrier’s website until that evening.

Due to large amounts of online credit card fraud, all orders are subject to approval by our payment verification department. We will notify you by phone or email should your order be delayed.

We have a 14 day return policy, which means you have 14 days after receiving your item to request a refund for any defective products.

Returns and exchanges are only available for faulty items, goods not as described, or in some instances, for incorrect sizing.

Due to health and safety regulations, sex-toy.com.au cannot resell any returned or exchanged products.

This policy is in place to prioritise your well-being and ensure that you receive the highest standard of hygiene and quality in all products.

To be eligible for a refund, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging.

You’ll also need the receipt or proof of purchase. We do not issue refunds for change of mind or incorrect choice.

Under Australian Consumer Law, we are not obliged to accept returns for “incorrect choice” or “change of mind” so please choose your products carefully. 

Any freight and insurance costs to return the item to us are at your expense. This includes the liability for any lost freight – send via registered post.
If your return request is accepted, we will provide you with all instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.

Damages and issues

Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.

Exceptions / non-returnable items

We do not accept returns for any products that have change of mind, damaged products, or for products that have been used or do not have their original packaging.

Please get in touch if you have questions or concerns about your specific item.

Unfortunately, we cannot accept returns on sale items or gift cards.

Refunds

We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 7 business days.

Please remember it can take some time for your bank or credit card company to process and post the refund too.

Frequently Asked Questions

What is the Vac-U-Lock Universal Strap-On Plug?
The Vac-U-Lock Universal Strap-On Plug is a Doc Johnson harness system with a 60-inch adjustable nylon strap designed to accommodate multiple dildos using the innovative Vac-U-Lock attachment mechanism for enhanced sexual experiences.
Is this strap-on plug compatible with different dildo sizes?
Yes, the Universal Strap-On Plug features a standardized Vac-U-Lock compatible base that allows quick attachment and interchangeability of multiple Vac-U-Lock dildos, providing maximum flexibility for users.
Where can the Vac-U-Lock Universal Strap-On Plug be used?
This strap-on plug can be used during sexual activities, BDSM play, and intimate encounters. Its adjustable 60-inch nylon strap ensures a secure fit for various body types and positions.
Can the Universal Strap-On Plug enhance sexual experiences?
The plug enables users to explore different penetrative configurations, offers comfortable extended wear, and provides unprecedented freedom of movement during sexual interactions with its ergonomic curved base design.
Which features make this Vac-U-Lock plug unique in bondage play?
Its proprietary Vac-U-Lock mechanism, adjustable nylon strap, ergonomic curved base, and universal compatibility distinguish this plug from traditional restrictive harness systems during BDSM and sexual activities.

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