Master Series Leviathan 13.5-Inch Inflatable Dildo, Think Big

Big On Presence, With Fullness You Can Adjust

Leviathan makes quite an entrance before you even touch the pump. This giant inflatable dildo from Master Series starts at approximately 34.3cm in total length and 7.3cm across, pairing a substantial shape with raised, semi-realistic texture. For someone who already enjoys generous proportions, it is a rather intriguing addition to the toy drawer.

The difference is beneath the surface. A firm internal core gives the dildo structure, while the outer body expands with the attached squeeze bulb. You can explore a little extra fullness at your own pace, with the release valve close by when you want to let the air out.

There is no motor, charging cable or menu of settings to learn. The interest comes from the shape, the textured shaft and the way inflation changes the feel. Get comfortable, take your time and let curiosity have a say without giving comfort a day off.

“A big presence, a little curiosity and absolutely no need to rush.”

Master Series Leviathan Inflatable Dildo Key Features

✅ Substantial Starting Size: Approximately 34.3cm total length and 7.3cm diameter before inflation.

✅ Adjustable Fullness: The inflatable outer body can expand to approximately 9.1cm in diameter.

✅ Firm Internal Core: Gives the toy structure beneath its inflatable exterior.

✅ Manual Squeeze Bulb: Add air gradually with the attached hand pump.

✅ Release Valve: Turn the knob at the pump to let the air out before removal.

✅ Semi-Realistic Texture: Bumps, ridges and sculpted contours bring detail along the shaft.

✅ Unpowered Design: No batteries or charging; size, texture and inflation provide the interest.

Product Details

Leviathan combines the presence of an oversized dildo with a changeable outer body. The starting diameter is already substantial, so the uninflated size deserves just as much attention as the expanded measurement. Compare it with a toy you already enjoy before choosing your starting point.

The internal core helps the dildo hold its shape without depending entirely on air pressure. That gives you a structured feel before inflation, with room to change the fullness when the starting size is comfortably manageable. Extra air is an option, rather than something you need to add to enjoy the toy.

Raised veins, ridges and a defined head give the shaft its semi-realistic character. The black finish keeps the look simple while letting those contours stand out. It is a textured design with a firm centre, so the appeal lies in a substantial, defined shape rather than a soft, freely bendable toy.

The attached bulb introduces air and the release knob lets it escape. Practise both actions before use and keep the pump accessible throughout the session. Published inflated dimensions describe the toy's expansion; they are not a target to reach. A little change can be quite enough when you are choosing by feel.

Experience Level

For experienced adults already comfortable with very large vaginal toys. The approximately 7.3cm starting diameter is the important first consideration, even if you plan to leave it uninflated. Choose it for a size and feel you already understand, with time to prepare and complete control over stopping.

Best For

Size enthusiasts who enjoy a firm, textured dildo and would like to explore adjustable fullness. The core gives the shape its structure, while the outer body adds a different possibility from a conventional solid toy. You can stay with the starting size or introduce a small change when it feels right.

It also suits attentive partnered play where communication is part of the enjoyment. Take time to get comfortable, keep the pump and release valve within reach, and agree that either person can call a pause. The most satisfying pace is the one that suits the person enjoying the toy.

Enjoy A Toy With A Big Personality?

You will appreciate Leviathan if generous proportions and pronounced texture are already favourites in your collection. Its sculpted shape has plenty of presence, and the firm core gives you a defined feel before the inflatable section comes into play.

It is also an appealing choice when you enjoy exploring one sensation slowly. There are no vibration patterns to scroll through or batteries to find, just a substantial toy and a manual way to change the fullness. Curiosity is welcome; comfort gets the final word.

Product Information & Measurements

ℹ️ Brand: Master Series

ℹ️ Model: Leviathan giant inflatable dildo

ℹ️ Colour: Black

ℹ️ Uninflated Total Length: Approximately 34.3cm (13.5 inches)

ℹ️ Inflated Length: Approximately 36.8cm (14.5 inches)

ℹ️ Uninflated Diameter: Approximately 7.3cm (2.86 inches)

ℹ️ Inflated Diameter: Approximately 9.1cm (3.58 inches)

ℹ️ Length Basis: Overall toy length, not insertable length

ℹ️ Material: Silicone rubber and metal

ℹ️ Construction: Inflatable outer body with a firm internal core

ℹ️ Surface: Semi-realistic bumps, ridges and contours

ℹ️ Inflation: Attached manual squeeze bulb and tubing

ℹ️ Deflation: Twist-release knob at the pump

ℹ️ Power: Manual; no batteries required

What's Included

ℹ️ 1 x Master Series Leviathan inflatable dildo

ℹ️ Attached hand pump, tubing and release valve

Care & A Little Preparation

Before play, check the surface, tubing, pump and valve, and test that the toy inflates and fully deflates. Use plenty of water-based lubricant, take your time and only begin with a starting size that feels comfortable. This design is for vaginal use; its rounded base is not a flared anal safety stop.

Add air gently, pausing to check comfort, and keep the release valve easy to reach. Stop and release the air if anything feels painful, numb or uncomfortably pressured. Never force insertion or keep inflating against resistance, and fully deflate before removal. Use only when the inflation and release mechanisms are working reliably.

Freshen the outer surface before and after play with warm water and mild soap or a toy cleaner, then wipe away residue and dry thoroughly. Keep water out of the pump and tubing, and avoid immersing the complete toy. Wipe the inflation parts separately and store everything clean, dry and apart from other toys.

Tip: Get familiar with the release valve before the first session. Knowing exactly where it is and how it works makes the whole experience feel more relaxed.

Shop With Confidence

We like Leviathan for its distinctive combination of a firm core, sculpted texture and manually adjustable fullness. It is a specialist choice with plenty of presence, best enjoyed by someone who knows their preferred proportions and likes taking the time to savour a different feel.

We have been helping Aussies find their kind of fun for over 25 years, with a warm welcome, useful advice and a little cheek. Here is to curious collections, comfortable choices and enjoying the lovely bits at your own pace.