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Cindryven is a platinum silicone knotted canine dildo with a tapered red head, a sculpted shaft, and one rounded knot above a suction-cup base. Red-and-white marbling continues from the body through the base. Available in S and M, it combines anatomical detail with the pronounced width change of a fantasy design—an option for adults who enjoy realistic detail but want a different anatomical silhouette.
The head narrows toward a pointed tip, then opens into an elongated body. Its outline changes gradually through the upper section rather than maintaining the same width from end to end. The broadest part of the head sits below the tip, giving it a distinct shoulder before the transition into the shaft.
Raised contours along the surface
The shaft carries flowing relief, raised folds, and smaller ridges along parts of its surface. These are molded contours rather than a uniformly smooth finish. They can add localized variation in contact as the surface changes from a raised area to a lower one. The texture stays close to the shaft's underlying shape, leaving the single knot as the most prominent feature of this fantasy dildo.
One knot, with a defined transition
Below the shaft, a narrower waist leads into the rounded knot. That change from a narrower section to a broader bulge can produce a more distinct sense of fullness than the adjacent shaft. The contour narrows again between the knot and the base, giving the knot a clearly separated outline.
This knotted dildo has one main bulge rather than a sequence of progressively larger knots. Its central contrast comes from the shaped shaft and one fuller section below it. The smaller surface ridges provide texture without turning the whole body into a repeated, beaded profile.
S and M: compare the two sizes
S is the shorter version with the narrower knot. M adds both insertable length and knot width while retaining the same design. Choose between two proportions of the same form, rather than a different number of knots or a different base style.
Measurement
S
M
Head width
0.94 in / 2.4 cm
1.30 in / 3.3 cm
Maximum knot width
1.65 in / 4.2 cm
2.01 in / 5.1 cm
Knot circumference
5.28 in / 13.4 cm
7.01 in / 17.8 cm
Total length
5.51 in / 14 cm
7.05 in / 17.9 cm
Insertable length
5.00 in / 12.7 cm
6.42 in / 16.3 cm
Net product weight
0.235 lb / 106.6 g
0.529 lb / 239.8 g
Kervyra measured the dimensions and net weights directly. Widths were measured straight across with a ruler; circumference was measured around the widest part of the knot. Inch and pound values are approximate conversions of the original centimeter and gram measurements.
Platinum silicone and a suction-cup base
Made from platinum silicone. Kervyra describes this version's firmness as medium. The flared base incorporates a suction cup that can attach to a flat surface. Both sizes have this base design, with the red-and-white color blend continuing to the bottom.
The Unfinished Key — A Cindryven Story
Story illustration from The Unwritten Realm.
From The Unwritten Realm
Mara lifted the torn map into the light, the brass key in her other hand. Across the water, the door still stood a finger's width open.
"Then who made the mark?"
"Bring the key," a voice called through the narrow opening.
An ember-red crest appeared in the gap, then a white coat. "Cindryven. I can show you."
Neruvon kept its flank against the chain. Bridovar tested the settled bridge, then crossed with Mara and the traveler. Behind them, the creature stayed on the landing.
Cindryven opened the door only when all three had reached it. A workbench stood inside, covered with clay molds and brass filings.
