Master Series Leviathan Giant Inflatable Dildo Black

Already Massive At 7.3cm Wide, With A Reinforced Internal Core And Manual Inflation Up To 9.1cm

Some dildos are designed to push the boundaries of size. The Master Series Leviathan takes that idea seriously. Measuring an enormous 34.3 cm long and 7.3 cm in diameter before inflation, this giant dildo is built for experienced size enthusiasts who know exactly what they're getting into.

Its standout feature is the inflatable outer body. Once you're comfortable with the initial size, the attached hand pump allows gradual expansion, increasing the diameter to approximately 9.1 cm. A supportive internal core helps maintain the dildo's structure, while semi-realistic bumps, ridges and contours add extra texture.

There's no motor, complicated controller or charging cable involved. Simply use the manual pump to adjust the expansion and turn the release valve to let the air out. With a starting size this substantial, patience, generous lubrication and complete control over inflation are essential.

“Leviathan doesn't do subtle. A giant textured shaft, a supportive internal core and adjustable inflation make this one for experienced size lovers.”

Master Series Leviathan Giant Inflatable Dildo Key Features:

✅ Giant 34.3 cm Starting Length: Leviathan measures approximately 34.3 cm overall before inflation, making it a substantial option for experienced users who prefer exceptionally large toys.

✅ Huge 7.3 cm Uninflated Diameter: Even before adding air, the thick shaft offers an extreme starting size that sets Leviathan apart from ordinary oversized dildos.

✅ Expands to Approximately 9.1 cm Wide: The inflatable outer section increases the shaft's diameter, allowing experienced users to adjust fullness without changing toys.

✅ Internal Support Core: Unlike completely hollow inflatable dildos, Leviathan has an internal core that helps maintain its structure during positioning and use.

✅ Manual Inflation Pump: The attached squeeze bulb introduces air into the inflatable section, giving you direct control over gradual expansion.

✅ Convenient Deflation Valve: A twist-release knob at the pump base allows air to escape when you're ready to reduce the size or remove the dildo.

✅ Semi-Realistic Textured Shaft: Raised bumps, ridges and anatomical contours create a more pronounced surface than a completely smooth dildo.

✅ Inflatable Silicone-Rubber Construction: The outer body combines a smooth rubber-like surface with an inflatable design, supported by internal metal components.

✅ Up To 36.8 cm Overall Length: The published dimensions increase from approximately 34.3 cm before inflation to 36.8 cm when inflated. These are overall measurements, not insertable lengths.

✅ Completely Manual Operation: No vibration motors, batteries or charging required. The experience comes from the dildo's substantial size, texture and adjustable expansion.

Product Details

Leviathan is a specialist inflatable dildo from Master Series, designed around exceptional size and adjustable fullness. Its proportions are impressive before you even touch the pump, with a starting diameter of approximately 7.3 cm and a total length exceeding 34 cm.

The internal support core makes an important difference. Fully hollow inflatable toys can feel floppy until filled with air, but Leviathan's reinforced construction helps it maintain a more defined shape before inflation. The surrounding inflatable section then provides the additional expansion.

Its textured surface features semi-realistic bumps and ridges, adding noticeable contours along the shaft. Combined with the substantial diameter and supportive core, the design offers a firmer, more structured experience than a soft, highly flexible dildo.

The attached squeeze bulb controls the inflation. Each gentle squeeze introduces air, expanding the outer section around the internal core. Because the pump does not have a specified pressure gauge, the user's comfort must guide how much air is added. There is no requirement to reach the maximum published dimensions.

When you're ready to finish, turn the release knob at the base of the pump and allow the dildo to deflate completely before removal. Always check that the pump, tubing and release valve work correctly before use, particularly when the toy will be inserted.

Best For

Best for highly experienced users who already enjoy exceptionally large vaginal dildos and want to explore adjustable fullness. Leviathan's combination of extreme starting dimensions and inflatable expansion is intended for people who are already comfortable with substantial sizes, not those just beginning to experiment with larger toys.

It's particularly appealing if you enjoy a firmer, textured dildo but want more control over its final dimensions. The internal support core provides structure, while the manual pump lets you introduce a small amount of additional expansion only when the initial size is completely comfortable.

Leviathan also suits experienced couples who prioritise careful communication and controlled movement. The separate pump and release valve allow one person to manage inflation while both partners remain attentive to comfort, positioning and the option to stop immediately.

Not Ideal For

Not ideal for beginners or anyone who has only used average-sized dildos. Leviathan starts at approximately 7.3 cm in diameter, which is already an extreme size before inflation. If you're still discovering your preferences, a smaller, non-inflatable dildo is a much more sensible starting point.

It's also not recommended for anal insertion. Leviathan does not have a confirmed, purpose-designed flared anal safety base that prevents the toy from being drawn completely inside. For anal play, choose an appropriately sized toy specifically designed with a secure flared base.

If you prefer a soft, highly bendable dildo, Leviathan's internal support core may also feel too firm. Its construction is designed to maintain structure while the outer section expands, rather than flex freely with your body's contours.

Finally, this isn't a toy to use for rapid stretching or to test how much pressure you can tolerate. Inflating beyond a comfortable level can cause injury. If the starting size is uncomfortable, do not attempt insertion or use inflation to force a larger fit.

Size & Measurements

ℹ️ Brand: Master Series

ℹ️ Product: Leviathan Giant Inflatable Dildo with Internal Core

ℹ️ Uninflated Total Length: Approx. 34.3 cm

ℹ️ Inflated Total Length: Approx. 36.8 cm

ℹ️ Uninflated Diameter: Approx. 7.3 cm

ℹ️ Inflated Diameter: Approx. 9.1 cm

ℹ️ Length Measurements: Overall product lengths, not insertable lengths

ℹ️ Construction: Inflatable outer body with internal support core

ℹ️ Material: Silicone rubber and metal

ℹ️ Surface: Semi-realistic bumps, ridges and contours

ℹ️ Inflation: Attached manual squeeze-bulb pump

ℹ️ Deflation: Twist-release valve

ℹ️ Experience Level: Advanced

ℹ️ Colour: Black

ℹ️ Power: Manual, no batteries required

What's Included

ℹ️ 1 x Master Series Leviathan Giant Inflatable Dildo with Internal Core

ℹ️ Attached manual inflation bulb and tubing

ℹ️ Integrated twist-release deflation valve

Care Note: Clean the external surface before and after use with warm water, mild soap or a suitable quality toy cleaner. Avoid submerging the complete toy, pump or tubing, and prevent water from entering the inflation system. Wipe the pump and tubing separately with a damp cloth, then allow everything to dry thoroughly.

Use plenty of water-based lubricant for comfortable vaginal use. Before insertion, inspect the surface for damage and test the pump and deflation valve. Never force insertion or inflate against resistance.

Add air gradually, pause frequently and stop immediately if you experience pain, unusual pressure, numbness or bleeding. Always release the air and allow the dildo to deflate completely before attempting removal. Do not use if the inflation or deflation mechanism is damaged or unreliable.

Store separately from other toys in a cool, dry place away from direct sunlight.

Shop With Confidence

Master Series Leviathan is a specialist choice for experienced size enthusiasts who want more than a conventional oversized dildo. Its enormous starting dimensions, textured silicone-rubber exterior, supportive internal core and manual inflation system provide a distinctive combination of structure and adjustable expansion.

Knowing your limits, taking your time and staying in control are what make this design worth exploring.

Backed by over 25 years of bringing Aussies pleasure and confidence, we are here to keep it simple, discreet, and genuinely worth it.