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Name: Large Triton Merman Fantasy Dildo
Brand: Sinnovator
Price: 139.99 GBP
Availability: InStock

Goldilocks measures and compares adult toys. Everything here is written in plain words, and none of it is for under-18s.

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Medium Triton Merman Fantasy Dildo by Sinnovator

Medium Triton Merman Fantasy Dildo Sinnovator

girth7.9″ usable 8.5″ feelnot published

$129

Large Triton Merman Fantasy Dildo by Sinnovator

Large Triton Merman Fantasy Dildo Sinnovator

girth10.2″ usable 10.6″ feelnot published

$180

One on top of the other

Both outlines on one axis, at the same scale. Sizes come from the makers’ published girths; where a usable cut-out exists, the profile itself is traced from it. Where they overlap they’re the same; the gap is the difference.

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Medium Triton Merman Fantasy Dildo8.5″ usable · widest shaft point 7.9″
Large Triton Merman Fantasy Dildo10.6″ usable · widest shaft point 10.2″

Side by side at the same scale

Drawn to scale: sizes from published girths, and the profile traced from the cut-out where we have one. Point positions along the shaft are approximate.

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How the numbers compare

Differences of about ¼ inch or more are highlighted. Blanks mean the maker doesn’t publish that point.

	Medium Triton Merman Fantasy Dildo	Large Triton Merman Fantasy Dildo
Usable length	8.5″	10.6″
Total length	11.0″	13.8″
Widest girth	7.9″	10.2″
Narrowest girth	7.5″	9.4″
Tip girth	7.9″	10.2″
Mid girth	7.5″	9.4″
Firmness options	not published	not published
Knot	no	no

Which one should you get?

Every line generated from the spec deltas above.

Stepping up from the Medium to the Large adds 2.3″ of girth: 7.9″ around becomes 10.2″.
That’s over an inch in one step. Owners who’ve worked up sizes generally suggest half an inch to an inch of girth at a time, so this is a jump rather than a nudge — the one to be careful with if the Medium already sits near your limit.
The Large is the longer of the two: 8.5″ of usable length becomes 10.6″.
Between the two? There’s no rung between them in the sizes we track for this sculpt — so it’s the Medium, or a different sculpt that lands in the gap.

See the Medium Triton Merman Fantasy Dildo → See the Large Triton Merman Fantasy Dildo →

The other sizes of this sculpt

Same sculpt, the other steps in its size ladder — each one measured the same way.

Small vs Medium Triton Merman Fantasy Dildo