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Strap-On Dildos & Harnesses

Shop strap-on dildos, complete sets, hollow styles and adjustable harnesses. Pick your fit, check what is included and find a setup that suits you both.

Choosing, comparing & caring for your toys

Strap-On & Harness Advice

Fancy switching things up? Choose a strap-on setup that suits both of you, from an adjustable harness to a different toy shape you have been curious about.

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Shop Strap-Ons & Harnesses Online in Australia

Shop strap-on dildos, adjustable harnesses, hollow strap-ons and strapless designs. Fancy a complete set or choosing the pieces together? Start with the format, then compare the harness fit and toy dimensions. A little planning leaves more room for picking your favourite.

Shop with Australian-owned Down Under Thunder, based in Bendigo, Victoria. Choose a set or compatible separate pieces, with discreet delivery across Australia.

Choosing Strap-Ons, Harnesses & Sets

A harness holds a compatible toy; a complete set bundles the listed pieces. Hollow and strapless designs have their own sizing needs. Keep the wearer’s measurements separate from the toy measurements when comparing your options.

Adjustable harnesses and sets

Adjustment straps help a harness fit within its stated range. A holder or ring secures the compatible toy. If you like the idea of changing toys later, look for a design with clearly specified fitting requirements rather than assuming anything will slot in.

Hollow strap-ons

A hollow design has an internal space as well as an external shape. Those dimensions answer different questions, so the overall length does not tell you how much room is inside. The harness fit is another measurement again.

Strapless and vibrating designs

Strapless toys use a different design from a harness-held setup. Powered models can add vibration or a remote, depending on the product. Pick the shape and format first, then decide whether you fancy the extra controls.

Strap-On & Harness FAQs

Does every strap-on include a harness?

No. Some listings are toys or harnesses sold separately, and strapless designs are another format. A complete set will specify the included pieces.

Can a harness hold different dildos?

Some can, within their stated base and diameter requirements. That can give you room to change shapes later without assuming every dildo will fit.

What is the difference between a hollow strap-on and a sleeve?

A hollow strap-on uses its specified strap-on setup, while a wearable sleeve has its own retention design. Both need suitable internal fit, but they are not automatically interchangeable.

How do I measure for a strap-on harness?

Use the body measurements specified in that harness’s sizing guide and its adjustment range. Waist, hip or other placement measurements depend on the design. The toy-holder diameter is a separate measurement, so keep the two fit decisions distinct.

Can I replace the ring in a harness?

Some harnesses have interchangeable holders or rings; others do not. Where replacements are supported, choose the specified fitting and size. A removable-looking part is not proof that every replacement is compatible.

Does strapless mean it will stay in place without adjustment?

No. Strapless describes the design, not a universal fit or hands-free guarantee. Shape and individual fit still matter, and the product’s intended-use guidance explains how it is meant to be supported.

Should we buy a full set or choose the harness and toy separately?

A full set brings specified pieces together and can simplify the first shop. Separate purchases give you more choice over the harness and toy, but you need to establish their compatibility. Choose the route that suits your plans, not just the bigger box.

What comes with a vibrating strap-on set?

Check for the harness, toy, controller and charging cable or batteries individually. Some listings are powered toys sold without a harness. If a remote is included, check its power source too.