Strap-On Harnesses, Kits & Hollow Strap-Ons

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      This collection covers four distinct product types across 70+ options: complete harness-and-dildo kits, hollow strap-ons designed for penile extension or erectile dysfunction support, strapless options, and standalone harness-compatible dildos. Prices run from $16.95 to $152.95. All products ship from our Melbourne warehouse with free delivery on orders over $100.

      Four Types of Strap-On in This Range — What Is Different Between Them?

      These four product categories are often listed together but serve different purposes, different user anatomies, and different experience levels. Choosing the wrong type is the most common buying mistake in this category.

      Type How It Works Who Uses It Key Limitation Examples in Range
      Harness Kit (O-ring) Waist harness holds dildo via a removable O-ring; dildo included in kit All genders, couples of any configuration, beginners to advanced Harness size must fit wearer's waist/hips; O-ring must match dildo diameter Pretty Love Tom/Jerry, CalExotics Her Royal Harness, Lovetoy Ingen Sets
      Hollow Strap-On Worn over the penis; adds length and girth or enables penetration regardless of erection People with penises — extension or ED support No direct penile stimulation for wearer; prosthetic function, not a toy for sensation Fetish Fantasy 7" & 9" Hollow, Lovetoy Ingen Hollow 8.5"
      Strapless Strap-On Insertable bulb held in place by pelvic muscles; protruding end penetrates partner Couples where one partner has a vagina and good pelvic floor strength Requires significant pelvic floor control; will dislodge during active use without it Fantasy For Her Ultimate Strapless ($139.95)
      Harness-Compatible Dildo (standalone) Dildo with flat/flanged base compatible with standard O-ring harnesses; no harness included Buyers who already own a harness and want to add a dildo Harness must be purchased separately; dildo alone cannot be worn as a strap-on Lance's Cock 8.3", Mars Harness Series 7.7"

      Hollow Strap-Ons — Two Use Cases That Are Not the Same Product

      Hollow strap-ons appear in most collections listed alongside standard harness kits, but they serve two completely different purposes that no competitor clearly distinguishes.

      Use case 1: Length and girth extension. The hollow shaft is worn over the penis to add size — the Lovetoy Ingen Hollow Big at 8.5" ($79.95) adds both length and circumference for a partner who wants a larger size than their partner provides naturally. The wearing partner's penis fits inside the hollow core. Stimulation for the wearer is indirect and minimal.

      Use case 2: Erectile dysfunction support. The Fetish Fantasy Series 9" Hollow Rechargeable Strap-On ($117.95) is designed specifically to enable penetrative sex regardless of erectile function. The hollow shaft is worn over a non-erect or partially erect penis; the rechargeable vibrating motor runs along the shaft for the receiving partner's stimulation. For the wearing partner, there is no vibrating element directed at them — the product's design centres the receiving partner's experience.

      These two use cases have different buying criteria. For extension: shaft internal diameter matters (it must comfortably accommodate the wearer). For ED support: the vibrating feature, harness security, and ease of entry under low-erection conditions matter more than added length. The Fetish Fantasy 7" Hollow with Balls ($74.95) is a non-vibrating version for those who want the ED support function without the rechargeable feature.

      How O-Ring Harness Compatibility Works Before You Buy

      Most harnesses in this collection use a removable O-ring that holds the dildo in place through its centre. The harness-compatible dildos in this range (Lance's Cock series, Mars Harness Series) have a flat flanged base wider than the O-ring opening and a shaft diameter that fits through it. Before mixing a separately purchased harness with a separately purchased dildo, two measurements must match: the O-ring opening diameter must be wider than the dildo shaft and narrower than the dildo base.

      The Pretty Love Tom and Jerry harness kits include two O-ring sizes to accommodate different dildo diameters. The CalExotics Her Royal Harness The Royal Ultra-Soft Set ($152.95) uses a brief/underwear-style harness with a built-in O-ring rather than a waist belt — the seated O-ring system provides more stability than strap-based alternatives during active use but makes swapping dildos slightly less convenient.

      The Lovetoy Ingen Easy Strap-On Sets use an adjustable strap system that bypasses the traditional O-ring entirely — the dildo attaches via a loop system embedded in the harness, making them easier to secure but less compatible with third-party dildos. If you plan to build a harness-plus-separate-dildo combination, the Pretty Love kits are a more flexible starting point.

      The Strapless Strap-On — What the Fantasy For Her Requires

      The Fantasy For Her — Her Ultimate Strapless Strap-On ($139.95) is the only product in this collection that requires no waist harness. The curved insertable end is held inside the vagina through pelvic muscle engagement; the extended outer end performs penetration. For the right user, this creates a more connected, hands-free experience than a harness allows.

      The limitation is direct: this product requires consistent, active pelvic floor muscle engagement throughout use. For users who have not specifically trained pelvic floor control, or who are trying a strapless strap-on for the first time, the insertable end will shift or dislodge during active penetrative movement. It is the highest skill-requirement product in this collection and is not recommended as a first strap-on purchase.

      At $139.95 it is also one of the higher-priced items in the range. For couples who are unsure whether a strapless format will work for them, starting with a harness kit at $34.95–$52.95 and building pelvic floor strength separately is the lower-risk path.

      Brand and Price Tier Breakdown

      Four distinct quality and price tiers exist in this collection.

      Brand Tier Harness/Build Quality Price Range (sale) Best For
      Mars / Pretty Love Entry Adjustable nylon straps, basic metal O-ring hardware $21.95–$38.95 First purchase, trying the format before committing
      Lovetoy Ingen Mid Padded waist straps, loop attachment system, vibrating options available $52.95–$79.95 Regular use, couples who want vibration included
      Fetish Fantasy (Pipedream) Mid-Premium Heavy-duty strap hardware, hollow specialist products, rechargeable motor $74.95–$117.95 Hollow strap-on users, ED support, vibrating hollow
      CalExotics Her Royal Harness Premium Soft underwear-style brief, premium stitching, O-ring system built into fabric $152.95 Extended comfort wear, couples who use it regularly

      The Lance's Cock standalone dildos ($16.95–$19.95) sit outside these tiers — they are harness-compatible dildos without a harness, priced for buyers who already own a harness and need an additional dildo option.

      What We Found Mapping These Products Against Actual Buyer Questions

      Looking across the 70+ products in this collection against the questions buyers most commonly ask in product reviews and support conversations for this category, three patterns stand out:

      • The hollow strap-on is consistently miscategorised as a novelty item. In practice, the Fetish Fantasy Hollow series is the most purpose-specific product in this collection — it is a prosthetic aid for a specific functional need, not a toy in the traditional sense. Buyers who purchase it expecting a vibrating sensation toy for themselves will be disappointed. Buyers who purchase it for its intended use find it uniquely effective for that purpose.
      • Complete kits are significantly lower-friction than mixing harness and dildo separately. The Pretty Love Tom at $34.95 and Jerry at $38.95 include a calibrated harness-dildo combination tested to work together. Separately purchasing a $16.95 dildo and a harness from a different brand introduces sizing uncertainty that beginners consistently report as frustrating.
      • Harness straps do not fit all body sizes equivalently. The Mars Harness Series dildo ($21.95) is listed in the strap-on section as a dildo only — the harness to pair with it is sold separately. Entry-level harnesses from this range typically adjust to waist circumferences of 65–130 cm. The CalExotics brief harness ($152.95) uses elastic fabric that accommodates a wider size range without buckle adjustment.

      Related: dildos · vibrators · lubricants · bondage gear

      What is the difference between a strap-on kit and a harness-compatible dildo?
      A strap-on kit includes both the harness and a dildo matched to it — the Pretty Love Tom ($34.95), Lovetoy Ingen Sets ($52.95–$69.95), and CalExotics Her Royal Harness Set ($152.95) are all complete kits. A harness-compatible dildo is sold alone — it has a flat flanged base that fits standard O-ring harnesses, but the harness must be purchased separately. The Lance's Cock and Mars Harness Series dildos in this collection are this second type. If you do not already own a harness, buy a complete kit.
      Who are hollow strap-ons designed for?
      Hollow strap-ons serve two distinct use cases. The first is length and girth extension — the hollow shaft is worn over the penis to provide a larger penetration size. The second is erectile dysfunction support — the Fetish Fantasy Hollow series allows penetrative sex regardless of erectile function, with the hollow shaft worn over a non-erect penis. Neither use case involves significant sensation for the wearer. If both-partner stimulation is the goal, a vibrating harness kit is a better choice than a hollow strap-on.
      What lube is safe to use with strap-on harnesses and dildos?
      Use water-based lubricant with all silicone dildos — silicone-based lubricant will degrade silicone toy surfaces over time. The dildos in this collection that are made from silicone (including the Fetish Fantasy and CalExotics products) require water-based lube only. PVC and TPE dildos (some entry-level products in this range) are compatible with both water-based and silicone-based lubricants but are not body-safe materials for long-term use. Check the individual product material listing before selecting a lubricant.
      Does the strapless strap-on work for beginners?
      Not reliably. The Fantasy For Her Ultimate Strapless Strap-On ($139.95) is held in place entirely by pelvic floor muscle engagement. Without consistent, trained pelvic floor control, the insertable end will shift or slip during active penetrative use. It is the highest skill-requirement product in this collection. For a first-time strap-on purchase, a harness kit is the practical starting point — the Pretty Love Tom at $34.95 or the Lovetoy Ingen Easy Set at $52.95 are the lowest-friction beginner options.
      How do I know if a dildo is compatible with a harness?
      A harness-compatible dildo has a flat or flanged base that is wider than the harness O-ring opening. The shaft must be narrow enough to pass through the O-ring; the base must be wide enough to stop the dildo from passing all the way through. Most harnesses in this collection include two O-ring sizes to accommodate different shaft diameters. If you are buying a harness and dildo from different products in this range, check that the dildo is listed as "harness compatible" or "harness series" in its description.