Strap-on harness with patented vacuum attachment system. Cushioned neoprene construction adjusts up to 60 inches for secure, hands-free play.
Key Features:
Patented vacuum system creates unbreakable seal during play
Cushioned neoprene construction prevents chafing and pressure points
Adjusts up to 60 inches for secure custom fit
Open crotch design maintains intimate access throughout sessions
Snap front mechanism allows quick attachment swapping easily
The Vac-U-Lock Platinum Supreme Harness with Plug is a strap-on harness system that uses patented vacuum technology to lock attachments securely in place during penetrative play. Built with cushioned neoprene, it adjusts up to 60 inches and eliminates slippage that frustrates couples mid-session.
The Vac-U-Lock Platinum Supreme Harness with Plug uses patented vacuum technology to create an airtight seal that grips any compatible attachment without slipping or twisting. The harness body is constructed from cushioned neoprene with a reinforced back panel, made to sit comfortably against your body during intense sessions. An open crotch design maintains access while the snap-front mechanism lets you swap attachments without removing the harness entirely.
What separates this from basic O-ring harnesses is the reliability of the vacuum lock combined with genuine comfort engineering. Where standard anal sex toys often require adjustment mid-session, this system's seal remains consistent, letting you focus entirely on sensation rather than managing the hardware.
Before your first session, inspect the harness seams and test all straps. Put on the harness and tighten it so it sits snugly against your body without cutting off circulation. The fit should feel secure but not restrictive—you should be able to slide one finger under the straps comfortably. Use generous amounts of Anal Lubricant on both the attachment and the receiving partner's anal opening to ease insertion and reduce friction.
Slide the attachment into the front snap connector until you hear a slight click—the vacuum seal engages automatically. Start slowly to let the receiving partner adjust to the size and sensation. The harness stays put during movement, but check comfort between position changes. After play, carefully separate the attachment by gently pulling away—the seal releases without effort. Wash both harness and attachment with warm water and mild soap, then air dry thoroughly.
This harness suits couples who have tried basic systems and want reliability that doesn't interrupt flow, or anyone exploring Anal Balls and other anal toys alongside strap-on play.
Great if you…Wash the harness after every use with warm water and mild soap, paying special attention to seams and the attachment connector. Rinse thoroughly and air dry completely before storage—moisture trapped in neoprene can develop odour over time. Store in a cool, dry place away from direct sunlight, which can fade the black neoprene. Keep compatible attachments stored separately to prevent the vacuum seal from becoming weak between uses.
Understanding anal play techniques, relaxation methods and sensation progression will help you get more from any harness system. Read our Anal Sex Toys Guide for detailed guidance on preparation, positioning and aftercare across different anal play activities.
The vacuum seal technology feels noticeably different from standard O-ring harnesses on first use. Most people notice immediately that the attachment has virtually no play or wiggle—the connection stays rigid throughout movement and position changes. This removes a common frustration point, but it also means you need to ensure correct positioning before the seal engages, since readjusting mid-session requires breaking the vacuum.
First-time users often report surprise at how comfortable the cushioned back actually is during longer sessions. The neoprene distributes pressure evenly across your body rather than concentrating it on thin straps. What takes adjustment is learning to create a proper seal—slide the attachment in slowly and ensure it's fully seated in the snap connector for vacuum engagement.
Cleaning is straightforward because neoprene resists odour better than fabric alternatives, and the seams are well-sealed. The main wear point is the snap mechanism itself, which remains strong through hundreds of sessions if handled gently. Couples who switch between multiple Vac-U-Lock attachments find the universal compatibility invaluable for variety without buying different harnesses.
Weight is minimal, so fatigue isn't typically an issue even during extended sessions. The adjustable straps mean the harness grows with you or accommodates fluctuations in body shape—many users find one harness works for years without replacement.
| Harness Type | Attachment Security | Comfort for Extended Wear | Ease of Cleaning | Compatibility Range | Best Suited For |
|---|---|---|---|---|---|
| Vac-U-Lock Platinum Supreme | Vacuum seal — zero slippage | Cushioned neoprene back panel | Wipe and wash neoprene easily | All Vac-U-Lock plus standard toys | Couples prioritising rock-solid connection and comfort |
| Basic O-Ring Harness | Elastic straps with standard ring | Minimal padding, can cause chafing | Machine washable fabric straps | Attachment-specific rings only | Beginners learning strap-on basics on a simple |
| Leather Harness System | Metal hardware with D-rings | Heavy-duty but requires break-in period | Hand-clean leather, oil conditioning needed | Standard ring-style attachments | Users wanting durability and aesthetic appeal over extended years |
Get the Vac-U-Lock Platinum Supreme Harness with Plug if you want a strap-on system that actually stays put while you focus on sensation rather than adjustment. The vacuum lock eliminates frustration, the cushioned neoprene prevents chafing, and adjustable straps fit most body shapes. Order it from Malechastity.com.au with discreet Australia-wide delivery and experience the difference professional-grade vacuum technology makes during partner play. Service That Keeps Customers Coming Back.
Malechastity.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.
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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..
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.
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.
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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.
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Refunds
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