Premium silicone design in Nasstoys ERECTION ASSISTANT ensures 9.5-inch hollow strap-on functionality with adjustable harness fitting waists 29–59 inches. Dual-action shaft delivers realistic penetration while hollow core accepts penis or vibrator for enhanced sensation and hands-free partnered stimulation.
Key Features:
Hollow cavity accepts erect penis or vibrator for dual stimulation
Soft body-safe silicone construction throughout shaft and hollow chamber
9.5-inch shaft length with adjustable harness fitting waists 29–59 inches
Ergonomic design distributes weight evenly across hips and thighs
Dual-action hollow strap-on combines penetration with performance support simultaneously
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Nasstoys ERECTION ASSISTANT is a 9.5-inch hollow strap-on dildo with adjustable harness fitting waists 29–59 inches. The soft silicone construction accommodates performance enhancement, while the ergonomic design delivers realistic penetration. It suits couples and individuals seeking customizable, hands-free partnered or solo stimulation with secure harness control.
The ERECTION ASSISTANT hollow strap-on functions through a dual-action design: the realistic silicone shaft penetrates while the hollow cavity accepts an erect penis or vibrator for enhanced sensation and performance support. The adjustable harness secures the dildo against the body, distributing weight evenly across the hips and thighs so the wearer can move naturally without constant hand support. This hands-free design allows both partners to focus on sensation and connection rather than managing positioning.
Body-safe silicone forms the shaft with a soft, flexible texture that responds to body temperature and movement. The harness uses durable, adjustable webbing that withstands repeated use and washing without degrading. Those seeking additional options can explore our harness dildos collection for alternative styles and sizes.
| Dimensions | 9.5 inches length, hollow cavity core |
| Material | Body-safe silicone shaft, durable webbing harness |
| Harness Size | Adjustable fit for waists 29–59 inches |
| Waterproof | Fully waterproof, suitable for shower or bath |
| Compatibility | Water-based lubricants only |
| Includes | Dildo, adjustable harness, user manual |
Pairing the ERECTION ASSISTANT with a vibrating dildo inserted in the hollow cavity creates layered stimulation that many find more intense than either sensation alone. The rigid vibrator contrasts with the flexible outer shaft, producing compound sensation through the harness wearer's body and their partner simultaneously. For those exploring performance enhancement, the hollow design removes the need for separate positioning equipment, streamlining preparation and focus.
After each use, clean the silicone shaft and harness webbing with warm water and mild soap, paying special attention to the hollow cavity opening where lubricant and moisture accumulate. Ensure all water drains completely from the cavity before storage. Allow both components to air dry fully on a clean towel before storing in a cool, dry place away from direct sunlight. The silicone may interact with certain materials, so store separately from latex or rubber products.
Body-safe silicone forms the ERECTION ASSISTANT's shaft with non-porous construction that resists bacterial growth and maintains hygiene through repeated cleaning. The durable webbing harness uses materials compatible with all water-based lubricants and skin types. Silicone's flexibility prevents pressure points during extended wear, while its temperature-responsive nature creates subtle sensation shifts as the shaft warms to body heat during use.
This strap-on suits couples seeking hands-free partnered penetration without requiring manual positioning throughout use. The adjustable harness accommodates diverse body types, making it accessible regardless of size or shape. Those curious about performance enhancement, role-play with penetrative elements, or exploring new sensations during partnered intimacy find the hollow design particularly appealing. The realistic proportions appeal to people seeking authentic sensation over abstract or stylized designs.
For couples who have struggled to balance penetration with clitoral stimulation during partnered sex, the hands-free harness removes the physical barrier that manual positioning creates. When one partner's hands are free, they can provide direct clitoral contact, oral stimulation, or caressing while the strap-on delivers penetration—creating layered pleasure that single-focus positioning cannot achieve. The hollow cavity adds a dimension absent from solid strap-ons: the wearer feels sensation from their partner's body responding to the shaft, creating feedback loop that deepens connection. For those accustomed to vibrators or solo exploration, discovering how partnered penetration with hands-free support shifts intimacy from performance into shared sensation transforms what couples believe possible during sex.
Our independent testers evaluated harness security, shaft flexibility, hollow cavity functionality, and comfort during extended wear. The adjustable webbing maintained position without slipping during vigorous movement, while the silicone shaft's flexibility prevented pressure points on the wearer's body. The hollow cavity accepted various insertable objects securely without compromising the outer shaft's structural integrity.
Testers reported that the realistic proportions and responsive silicone texture created sensation that felt natural rather than mechanical. The waterproof construction performed reliably during shower use without water intrusion into the cavity. Individual results may vary based on anatomy, sensitivity, and usage.
| Product | Unique Advantage | Key Difference | Choose This If You Want |
|---|---|---|---|
| Nasstoys ERECTION ASSISTANT | Hollow cavity accepts insertable objects for dual sensation | Only model combining harness penetration with performance enhancement | Hands-free partnered play with hollow cavity feature |
| Non-phallic dildos | Abstract shapes target specific internal areas without realistic proportions | No harness included; designed for hand-held or solo use | Targeted internal stimulation without penetrative appearance |
| Thrusting dildos | Motorized thrusting motion without manual movement required | Requires batteries or charging; no harness for hands-free use | Automatic motion with partnered or solo penetration |
| Strap-on sextoys | Solid construction with varied sizes and materials for different preferences | No hollow cavity; designed for pure penetration without enhancement | Traditional hands-free penetration without hollow features |
| Strapless dildos | No harness required; wearer's body holds dildo in place through muscle control | Requires pelvic floor engagement; no external harness support | Hands-free play without visible harness equipment |
Discover what penetrative style works best for your body and preferences. Our black dildos collection offers additional options in various styles and harness types.
Strap-on play creates unique sensations when both partners focus on movement and response rather than manual positioning. Understanding harness fit, angle adjustment, and communication patterns helps couples discover what intensity and depth feel most pleasurable. Our comprehensive guide to strap-on play techniques covers positioning, comfort optimization, and sensation exploration for partnered intimacy.
Ready to experience hands-free partnered penetration with hollow cavity enhancement? The Nasstoys ERECTION ASSISTANT is available at Adultsmart with discreet Australia-wide shipping in plain packaging and confidential checkout processing.
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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 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)
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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.
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Generally, orders are processed and shipped the same day or next Business day.
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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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