Measured Pleasure — Intimate Product Dimensions & Comparison

Fantasy and creature dildos have a sizing problem that mainstream products don't. A realistic silicone dildo from a mainstream retailer comes in one or two sizes with reasonably consistent labelling. A fantasy dildo from Bad Dragon comes in Mini, Small, Medium, Large, and Extra Large — and the difference between a Bad Dragon Small and a Sinnovator Medium is not obvious from the labels alone.

The only way to compare fantasy dildos across brands is by actual dimensions. This guide covers the major fantasy categories — dragon, horse, knot, tentacle, and dog — with size context for the most common products in each.

Dragon Dildos

Dragon dildos are the most diverse category in terms of shape variation. Some are tapered and smooth, designed for easier insertion. Others have pronounced ridges, knots, or flanged bases that create significant girth variation from tip to base.

Bad Dragon produces the largest dragon catalogue of any manufacturer, with products ranging from around 10cm insertable length at Mini to over 30cm at Extra Large. Diameter at midpoint typically runs from about 2.5cm at Mini to 8cm or more at XL for their larger-girthed models.

Sinnovator and Creature Cocks offer dragon-style products at more moderate sizes, typically in the 14–20cm insertable length range with midpoint diameters of 3.5–5.5cm. These are generally more accessible for people new to the fantasy category.

The defining size consideration for dragon dildos is usually the knot or base flare — the widest point, which is often significantly wider than the midpoint. On knotted dragon designs, the knot diameter may be 2–3cm wider than the shaft midpoint. This is the dimension that determines whether a product is physically manageable, not the shaft diameter.

Horse Dildos

Horse-style dildos are characterised by a distinctive flared, flattened glans and pronounced shaft taper. The tip is relatively narrow — often 2–3cm in diameter — and the shaft widens significantly toward the base, which sits at a broad, flat angle.

This shape means that horse dildos are often more accessible than their listed diameter suggests, because initial entry is determined by the tip, not the widest point. A horse dildo listed at 5cm midpoint diameter might have a 2.5cm tip, making initial insertion considerably easier than the headline figure implies.

Bad Dragon's horse-style products (Dallas, Chance Flared, Chance Unflared) are among their most popular. At Small, Dallas has approximately 14cm insertable length and a midpoint diameter around 3.8cm. At Large, those figures rise to approximately 25cm and 6.5cm respectively.

Knot Dildos

The defining feature of a knot dildo is the spherical or ovoid bulge near the base — a shape derived from canine anatomy. The knot is the widest point of the toy and is the dimension that determines physical accessibility.

When evaluating a knot dildo, the relevant dimensions are the shaft diameter (for the main insertable experience) and the knot diameter (for whether the knot itself is usable). These are often listed as separate measurements, but not always — some listings give only the maximum diameter, which is the knot, without specifying the shaft.

Knot diameters on popular products range from about 4cm on smaller Sinnovator and Bad Dragon products to 9cm or more on larger Bad Dragon sizes. The shaft diameter on the same products is typically 2–3cm narrower than the knot.

Tentacle Dildos

Tentacle dildos typically feature a tapered, spiralling or ridged shaft that creates varied diameter along the length. The tip is narrow, the ridges or spirals increase in diameter toward the base.

This shape is among the more beginner-accessible fantasy categories because the gradual taper allows progressive insertion. Products from Bad Dragon's tentacle line, Creature Cocks, and Sinnovator's tentacle variants generally run 12–22cm insertable length with midpoint diameters of 3–5.5cm at medium sizes.

Dog Dildos

Dog-style dildos share the knot feature with knot dildos but typically have a more cylindrical shaft profile rather than a tapered horse-style shape. The shaft is the primary insertable portion; the knot is an optional feature that sits at the base.

Sizing considerations are the same as knot dildos: evaluate shaft diameter and knot diameter separately. At comparable sizes across brands, dog-style products from Bad Dragon and Sinnovator run similar dimensions to their knot dildo counterparts.

Comparing Across Brands by Size

The size label problem is most acute in the fantasy category. "Medium" means different things at Bad Dragon, Sinnovator, and Creature Cocks. The only reliable comparison is by actual centimetre measurements — insertable length and diameter at tip, midpoint, and base.

Intima Index catalogues 375+ fantasy products across Bad Dragon, Sinnovator, Creature Cocks, Twisted Beast, and Naughty Fox with verified dimensional data. The filter lets you select by girth bracket and length range across all fantasy products simultaneously, regardless of what each brand calls their size.

Products in this guide