SONO No. 31 Stretchy Penis Extension combines TPE construction with translucent design, adding 2.5cm length and 0.4cm girth. The elastic material stretches to fit securely with integrated ball strap for stability during use while maintaining visual connection.
Key Features:
Adds 2.5 centimetres in length and 0.4 centimetres in girth
Translucent thermoplastic elastomer material stretches to fit securely
Extends shaft by 2.5 centimetres with 0.4 centimetre girth increase
Integrated ball strap positions extension securely throughout intimate contact
Transparent design maintains visual connection during sex unlike opaque alternatives
Couldn't load pickup availability
SONO No. 31 Stretchy Penis Extension is a translucent TPE extension sleeve designed to enhance intimate experiences by adding 2.5 centimeters in length and 0.4 centimeters in girth. The elastic thermoplastic elastomer material stretches to fit securely with an integrated ball strap for stability. It maintains visual connection during use and suits couples seeking discreet dimensional enhancement without compromising sensation or comfort.
The SONO No. 31 stretches over the shaft to create measurable enhancement while the integrated ball strap positions it securely throughout intimate contact. The translucent TPE material allows partners to maintain visual engagement during use, creating a transparent layer that adds dimension without obscuring connection. The elastic construction conforms to individual anatomy, providing a customized fit that remains stable during movement.
Thermoplastic elastomer offers exceptional flexibility compared to rigid materials, allowing the extension to stretch and adapt without losing shape or integrity. The non-porous surface supports straightforward cleaning and maintains its clarity through repeated use. Those seeking additional enhancement options can discover our bondage kits collection at Adultsmart.
| Material | Thermoplastic elastomer (TPE) |
| Length Enhancement | 2.5 centimeters additional length |
| Girth Enhancement | 0.4 centimeters additional girth |
| Design | Translucent with integrated ball strap |
| Waterproof / Care | Waterproof; wash with warm water and mild soap |
| Includes | SONO No. 31 extension sleeve |
Pairing SONO No. 31 with leather bondage harnesses can create layered sensation and psychological intensity that many couples find more engaging than extension use alone. The combination of physical enhancement and restraint elements can deepen connection and exploration for partners interested in structured intimate play.
After each use, rinse the extension thoroughly with warm water and mild soap to remove any bodily fluids or lubricant residue. Pat dry with a soft cloth and allow it to air-dry completely in a cool location away from direct sunlight. Store the extension in a clean, dry place separate from other products to maintain material integrity and prevent degradation from contact with incompatible materials.
SONO No. 31 utilizes non-porous, body-safe thermoplastic elastomer that meets strict safety standards for intimate contact. The elastic material stretches without tearing, maintaining structural integrity through extended use. TPE's flexibility prevents rigid pressure points while the translucent composition allows partners to monitor comfort and positioning throughout intimate moments.
Suits couples seeking straightforward dimensional enhancement without complex application or ongoing adjustment. This extension appeals to partners who value visual connection and transparency during intimate moments. Those comfortable with stretchy materials and seeking modest, measurable enhancement—rather than extreme increase—find this approach practical and accessible for regular use.
For couples who have felt pressure to choose between enhancement and visual connection, the translucent design eliminates that compromise. The clear material allows partners to maintain the visual intimacy they value while experiencing measurable dimensional change. For those hesitant about enhancement products because they feared opacity or loss of sensation, discovering that clarity and enhancement can coexist shifts what feels possible in intimate exploration. The integrated ball strap removes the frustration of repositioning during use—a common complaint with simpler extension designs. For partners seeking to deepen connection through shared exploration, this product offers a concrete, non-invasive way to try something new together without requiring extensive preparation or specialized knowledge.
Our independent testers evaluated material elasticity, strap security, dimensional consistency, and visual clarity throughout extended use. The translucent TPE maintained its transparent appearance after repeated cleaning cycles, and the integrated ball strap remained secure during vigorous movement without requiring readjustment.
Testers confirmed the 2.5-centimeter length and 0.4-centimeter girth additions were consistent across multiple applications, and the elastic material adapted reliably to different anatomies without losing shape. Individual results may vary based on anatomy, sensitivity, and usage.
| Product | Unique Advantage | Key Difference | Choose This If You Want |
|---|---|---|---|
| SONO No. 31 Stretchy Extension | Translucent material maintains visual connection plus integrated ball strap stability | Only model combining clarity with built-in positioning security | Visual engagement with reliable enhancement |
| Wrist cuffs | Restraint-focused design for BDSM power exchange | Adds psychological intensity rather than physical dimension | Exploring restraint and control dynamics |
| Collar leash sets | Symbolic connection and guided movement control | Focuses on psychological submission rather than physical enhancement | Deeper power exchange and symbolic intimacy |
| Steel gags for BDSM | Sensory deprivation combined with physical restraint | Removes verbal communication while adding restraint elements | Intense sensory restriction and power dynamics |
Find our complete BDSM sets to discover comprehensive enhancement options suited to your exploration style.
Understanding how enhancement products affect sensation and psychological response helps couples communicate about what they're seeking from intimate exploration. Learning foundational concepts about comfort, security, and communication transforms how partners approach trying something new together. Our guide to BDSM fundamentals and exploration principles offers approaches and communication strategies for discovering what works best for your partnership.
Ready to explore dimensional enhancement with visual connection intact, SONO No. 31 is available at Adultsmart. All orders ship discreetly across Australia in unmarked packaging with confidential processing from checkout to delivery.
Adultsmart.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.
Free standard shipping on orders shipped within Australia above $200. For orders below $200 standard shipping within Australia is $12.95 and will be added at checkout.
Orders addressed to P.O box, G.P.O box or Parcel Collect will be handled by Australia Post. Extra time should be allocated for these orders.
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.
The price for international shipping is AU$12.95 for orders equal to or below 0.399kg (399grams), and AU$22.95 for orders with a total weight equal to or above 0.4kg (400 grams).
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.
Please note in regards to all orders
– These expected delivery dates/times are based on carrier shipping practices, your destination, and the items in your order.
– Expected delivery dates are estimates. Orders can be delayed due to fraud verification or the time of the order being placed. Items that are not regularly stocked cannot be held to the expected delivery dates.
– Orders may be delivered in separate shipments.
– The order cut off times are based on normal Business Hours and exclude weekends and Holidays: Monday – Friday 12 pm
– When your order ships you will receive an email from us with a link to track your order. If you receive your tracking number before 6 pm (AEST) it may not be updated on the Carrier’s website until that evening.
Due to large amounts of online credit card fraud, all orders are subject to approval by our payment verification department. We will notify you by phone or email should your order be delayed.
We have a 14 day return policy, which means you have 14 days after receiving your item to request a refund for any defective products.
Returns and exchanges are only available for faulty items, goods not as described, or in some instances, for incorrect sizing.
Due to health and safety regulations, Adultsmart.com.au cannot resell any returned or exchanged products.
This policy is in place to prioritise your well-being and ensure that you receive the highest standard of hygiene and quality in all products.
To be eligible for a refund, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging.
You’ll also need the receipt or proof of purchase. We do not issue refunds for change of mind or incorrect choice.
Under Australian Consumer Law, we are not obliged to accept returns for “incorrect choice” or “change of mind” so please choose your products carefully.
Any freight and insurance costs to return the item to us are at your expense. This includes the liability for any lost freight – send via registered post.
If your return request is accepted, we will provide you with all instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
We do not accept returns for any products that have change of mind, damaged products, or for products that have been used or do not have their original packaging.
Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 7 business days.
Please remember it can take some time for your bank or credit card company to process and post the refund too.