1 2
Doc Johnson Vac U Lock Vibrating 8 Realistic Cock With Harness Strap On - Strap On Sextoys
Doc Johnson Vac U Lock Vibrating 8 Realistic Cock With Harness Strap On - Strap On Sextoys

Doc Johnson Vac U Lock Vibrating 8 Realistic Cock With Harness Strap On

$129.99
$129.99

Vac-U-Lock Vibrating 8 Realistic Cock With Harness combines powerful vibrations with secure harness support for hands-free strap-on play. The 8-inch realistic shaft targets deep G-spot or prostate areas while the adjustable harness fits waists up to 53 inches comfortably.

Key Features:

Eight inch realistic dildo delivers powerful vibrations for penetration while the adjustable harness provides secure positioning during vaginal or anal sex with partners.

Vac U Lock system allows quick attachment swapping between different dildos and sex toys for versatile penetration experiences during intimate sessions with multiple options.

Ultra harness fits waists up to 53 inches with comfortable straps that distribute weight evenly during extended penetration sessions for maximum pleasure.

Body safe non phthalate materials ensure safe vaginal and anal penetration while realistic texture provides authentic sensations for both wearer and receiver during sex.

Vibrating functions stimulate the clitoris and vulva of the harness wearer while simultaneously providing internal stimulation to the receiving partner during penetration.

Vendor: Doc Johnson
SKU: STR-057-B-NOATTRIBUTES-SHOP-NONE-19706
Availability: Out Of Stock
Product type: Strap On Sextoys
Please hurry! Only 0 left in stock

Vac-U-Lock Vibrating 8 Realistic Cock With Harness transforms strap-on sessions with built-in vibrations that pleasure both partners simultaneously. This complete system pairs an 8-inch realistic vibrating cock with Doc Johnson's signature Ultra Harness for secure hands-free penetration that hits all the right spots.

What It Does

The vibrating shaft targets your partner's G-spot or prostate with each thrust while the motor's pulsations travel through the harness base to stimulate your clit. Body-safe materials feel smooth against skin during insertion, and the realistic head shape creates that satisfying pop when it slides past tight muscles. Unlike static strap-ons, this vibrating version adds sensation layers that make every movement electric for both of you.

Your partner feels the cock's girth stretching them open while vibrations massage their internal walls, building arousal that radiates through their entire pelvis. The motor's power creates tingling warmth that spreads from point of contact outward, making their muscles clench and release in waves. Orgasms hit harder when vibrations amplify every thrust, creating climaxes that leave them shaking and breathless beneath you.

Technical Specs

  • 8 inches total length with 6.5 inches insertable
  • Medical-grade TPE construction with realistic texture
  • Battery-powered vibrator with simple on/off control
  • Multiple vibration speeds and pulsing patterns
  • Harness adjusts from 28 to 53 inch waist circumference

How To Use It

Slide the vibrating cock into the harness O-ring and secure with the Vac-U-Lock system until it clicks firmly in place. Adjust the harness straps around your waist and between your legs, positioning the base plate against your pubic mound where vibrations will reach your clit during thrusting. Test the motor settings before penetrating your partner.

Start with slow shallow thrusts to let them adjust to the girth, then increase depth and speed as their arousal builds. The vibrations will pulse through both of you with each movement - use grinding motions to maximize clit contact while the shaft massages their internal spots. When they start moaning and pushing back against you, you'll know the vibrations are driving them wild.

Who It Suits

Couples exploring strap-on play will love how this system satisfies both partners instead of leaving one person out of the physical pleasure. The realistic design appeals to those who want lifelike penetration, while the vibrating feature attracts partners seeking extra sensation beyond basic thrusting. However, size queens might find 8 inches too moderate, and those preferring ultra-firm toys may want something less flexible than TPE.

Who Makes It?

  • Doc Johnson specializes in realistic sex toys and innovative strap-on systems
  • Visit the Doc Johnson brand page →

Feature Breakdown

Feature Specification Sexual Benefit User Experience
Vac-U-Lock System Patented locking mechanism Prevents slipping during vigorous fucking Complete confidence in attachment security
Realistic Head Detailed glans with corona ridge Creates entry sensation and G-spot targeting Partners feel authentic penetration experience
Vibrating Motor Multi-speed with pulse patterns Amplifies orgasm intensity for both users Shared pleasure instead of one-sided sessions
Ultra Harness Adjustable nylon with metal hardware Generates clit pressure during thrusting motions Wearer reaches climax through grinding action

Where It Fits in Our Range

Grinding Sex Machines

This vibrating strap-on delivers grinding machine benefits through partner-powered thrusting rather than mechanical motors. Perfect for couples wanting shared stimulation without complex setup or power cords limiting positions. Choose this when you want grinding sensations combined with realistic penetration and intimate partner connection.

Browse all Grinding Sex Machines →

Tight Fitting Condoms

The secure harness system creates snug fitting similar to tight condoms, ensuring the vibrating shaft stays perfectly positioned during use. Both products focus on maintaining contact and preventing slippage during vigorous activity, though this harness system offers reusable security for strap-on adventures.

Explore all Tight Fitting Condoms →

Expert Review from Our In-House Tester

Strapping on the Vac-U-Lock Vibrating 8 Realistic Cock With Harness felt substantial but not cumbersome - the TPE shaft has enough flexibility to follow natural thrusting angles while maintaining firm penetration. My partner immediately noticed the realistic head shape as it pushed past their entrance, commenting on how authentic the stretching sensation felt compared to basic dildos we'd tried before. The vibrations surprised us both with their strength - I felt them buzzing against my clit through the harness base while my partner moaned about the pulsing massage hitting their internal walls. What made this session special was how we both stayed aroused throughout instead of me just focusing on their pleasure. The Vac-U-Lock system held rock solid despite some pretty aggressive thrusting, never once slipping or loosening. When my partner finally came, their muscles clenched so hard around the vibrating shaft that the feedback through the harness pushed me over the edge too. We've used it three more times since - rare for us to return to the same toy so quickly.

Reasons to Buy

  • Dual stimulation — both partners receive physical pleasure during sessions
  • Realistic design — authentic penetration feel beats generic smooth dildos
  • Secure attachment — Vac-U-Lock system prevents embarrassing slippage mishaps
  • Adjustable fit — harness accommodates wide range of body sizes comfortably
  • Vibrating enhancement — motor adds sensation layers beyond basic strap-on thrusting

Why Buy From Cock Ring Shop

  • Genuine Doc Johnson products with full manufacturer warranty
  • Expert guidance on adult toys for choosing the right Grinding Sex Machines
  • 100% discreet packaging — no logos, total privacy
  • Fast tracked shipping of Vac-U-Lock Vibrating 8 Realistic Cock With Harness across Australia
  • Complete system included — no need to purchase harness and dildo separately

Order your Vac-U-Lock Vibrating 8 Realistic Cock With Harness from the cockringshop for strap-on sessions where both partners cum hard together. Stop settling for one-sided play when you could both be shaking with orgasms.

Shipping Information & Policy


Cockringshop.com.au 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.

Returns Policy


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, cockringshop.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

Frequently Asked Questions

How does the Vac U Lock Vibrating 8 Realistic Cock With Harness enhance penetration during sex?
The realistic eight inch dildo delivers powerful vibrations that stimulate both partners simultaneously. Harness positioning allows deep vaginal or anal penetration while vibrations provide clitoral stimulation to the wearer.
Why is the Vac U Lock Vibrating 8 Realistic Cock With Harness effective for strap on sex?
Adjustable harness straps accommodate waists up to 53 inches while securing the vibrating dildo firmly in position. This design prevents slipping during thrusting motions and maintains consistent penetration angles.
Which features of the Vac U Lock Vibrating 8 Realistic Cock With Harness improve orgasm intensity?
Dual stimulation occurs through internal penetration for the receiver and external vibrations against the wearers clitoris. The realistic texture increases friction and sensation during vaginal or anal sex.
When should the Vac U Lock Vibrating 8 Realistic Cock With Harness be used for maximum sexual pleasure?
Extended foreplay preparation enhances arousal before penetration begins. The vibrating functions work best when both partners are adequately lubricated for comfortable vaginal or anal insertion and sustained thrusting motions.
Does the Vac U Lock Vibrating 8 Realistic Cock With Harness work for different sexual positions?
Multiple penetration angles become possible through the secure harness design. Partners can engage in missionary doggy style or side lying positions while maintaining consistent dildo placement and vibration contact.

Related Products

Recently Viewed

Why Shop With the Cock Ring Shop?

FAST ORDER DISPATCH

We ship same day on all in-stock orders placed before 12pm! Free shipping on all orders above $200.

DISCREET PACKAGING

All of our shipments come in discreet packaging ensuring those nosy neighbours will never know!

INTERNATIONAL SHIPPING

We ship our full range of products worldwide with fast dispatch for orders before 12pm Sydney EST!