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Vac-U-Lock - Ultra Harness

$34.00

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This harness features an adjustable waist up to 53 inches, an open crotch for maximum... Read more

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This harness features an adjustable waist up to 53 inches, an open crotch for maximum comfort, easy access, and non-slip action, all designed to give you command and control for erotic pleasures. Suitable for both women and men, the opening under the plug is positioned to allow the penis to hang below. Simply add a Vac-U-Lock attachment for a versatile and customizable experience.

Harness features:

  • Compatible with any Vac-U-Lock attachment
  • Open crotch design for comfort and access
  • Non-slip construction keeps it secure during play
  • Unisex fit designed for all bodies
  • Opening under plug allows penis to hang freely if desired

Size and material:

  • Adjustable waist: Up to 53 inches (134.6 cm)
  • Material: Durable nylon straps and soft-lined base for comfort

🔥 Pleasure Scale™ Rating

This Toy: 🎒 Bedroom Backup

Solid choice, not always first pick but glad it's there. Reliable, easy to use, and perfect as a secondary option in your toy drawer.

Who is this harness for?

This harness is ideal for:

  • Folks exploring strap-on play and seeking a starter option with Vac-U-Lock compatibility for customizable penetration setups.
  • Wearers with penises who want to engage in penetrative play while maintaining sensation through the open crotch and free-hanging access.
  • Anyone with mobility limitations who may find traditional penetration challenging but wish to thrill a partner in other ways.
  • Partners looking to switch roles or explore pegging fantasies without overly complex gear.

How to use the harness?

  1. Adjust fit: Start by loosening the waist and leg straps. Step in or pull the harness up, then tighten the straps around your waist and thighs until snug but comfortable.
  2. Attach toy: Insert your Vac-U-Lock-compatible toy into the plug slot and firmly press into place.
  3. Position plug opening: If using with a penis, make sure it fits through the opening under the plug for maximum comfort and sensation.
  4. Lubricate attachment: Add a water-based lube to the toy or dildo for a smooth ride.

Great positions to try:

  • Doggy style: Allows for full thrusting and control.
  • Missionary: Comfortable and great for eye contact and intimacy.
  • Standing or against a wall: Leverages gravity and helps with balance and depth control during thrusting.

How to clean and care for the harness?

  • Cleaning: Wipe down the harness with a damp cloth and mild soap, or hand wash if needed. Let air dry completely before storing.
  • Lube compatibility: Use only water-based lubricant with any toys used in the harness for longest material life.
  • Storage: Store flat or lightly folded in a cool, dry place away from direct sunlight. Keep away from silicone toys to prevent material transfer.

Harness practical use info:

  • Versatility: Compatible with wide range of Vac-U-Lock toys and accessories for personalized play.
  • Accessibility: Easier for some people with limited mobility to provide pleasurable penetration to a partner.

Additional information:

  • Decreased erection or ejaculation control: Can help users enjoy penetrative sex regardless of erection status.
  • Mobility-friendly: Helpful for users with limited hand/arm mobility as the toy can be pre-inserted and placed before engaging.

Special considerations when using the harness:

  • Mobility requirements: Needs basic flexibility and hand control to put on and adjust straps.

User experience tips:

  • Warm your attachment or toy in warm water first for a more body-like sensation during use.
  • Test fit before play: Adjust the straps until you can move and thrust without the harness shifting or pinching.
  • Use a mirror when first putting on the harness for faster and easier alignment.
  • Add a thin panty liner or cushioning if the base feels rough against skin, especially during longer sessions.
  • Try solo practice with a pillow or masturbator to get used to the weight and motion of your chosen toy.
  • Rotate attachments: Explore different plug sizes, textures, or dual-penetration toys to keep play fresh and surprising.

Yes! All our packages are shipped discreetly to ensure your privacy. We ship in plain boxes with generic packaging labels.

We ship and bill as ''Rumor Lab'' - without any visible logos or stickers.

Discreet box


Discreet label

Standard Shipping: Your products will arrive within 4 to 6 days after processing and shipping.

3-Day Expedited Shipping: $15.91 flat rate. Your products will arrive within 1 to 3 business days after processing and shipping.

2-Day Expedited Shipping: $29.65 flat rate. Your products will arrive within 1 to 2 business days after processing and shipping.

Free Shipping: Spend $89 or more to qualify. Your order will arrive in 4 to 6 days after processing.

🇨🇦 We offer identical shipping options for Canada, with prices automatically converted to Canadian dollars at checkout.

Digital products: Digital products should arrive instantly, however, we do check all orders and re-send them in 1-2 days if the system malfunctioned.

You can reach out to our email address: support@thesexshed.com or hello@thesexshed.com.

You can also reach out through the chat option in the Shop app or via any of our social media accounts (might take more time to respond).

You can also ask a product-related question using the form below.

We will respond as soon as we can.

While we are a relatively new store (since 2022), there aren’t LOADS of reviews (we didn’t pay some guy named "Bob" to leave us fake five-star reviews).

But hey, you can check out all the real ones right here — and peek at our Trustpilot page too.

Questions? Hit us up — we don't bite (unless you ask nicely).

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Reliable & Made To Last. Premium tools. 1-year warranty.
Explore More Your desires, our tools.
Satisfied. Confident. Energized. When you feel good, you move differently.